Class number problem for imaginary quadratic fields

Class, CLASS, Economy class, Social class, C-class cruiser, Class discrimination, Lerici-class minehunter, Middle class, Working class, Upper class, Fiji-class cruiser, Class (computer programming), American middle class, Class consciousness, Polar Class, Gleaves-class destroyer, Class action, Hamilton-class cutter, DR Class 130 family, Ship class, Lekiu-class frigate, Class F, British U-class submarine, Halifax-class frigate, N class, Railroad classes, Seawolf-class submarine, Destiny-class cruise ship, American Flower-class corvette, Auk-class minesweeper, Visakhapatnam-class destroyer, Condottieri-class cruiser, Social class in the United States, Marxian class theory, Virginia-class submarine, Airspace class, Calypso class, Skipjack-class submarine, Astute-class submarine, Kidd-class destroyer, Province class

MHC class II, Lower middle class, Ohio-class submarine, Borei-class submarine, Kuma-class cruiser, Ruling class, A class, Accentor-class minesweeper, Upper middle class, Shchuka-class submarine, Business class, Plunger-class submarine, Class struggle, Hébé-class frigate, Tripartite-class minehunter, Charles F. Adams-class destroyer, T class, Moudge-class frigate, Noun class, Character class, Lupo-class frigate, Java class file, Brahmaputra-class frigate, City class, S-class ferry, Adjutant-class minesweeper, J class, Gato-class submarine, Barbel-class submarine, Trafalgar-class submarine, V class, Lower class, Gearing-class destroyer, U class, Brooke-class frigate, M class, Paulding-class destroyer, Grand-class cruise ship, Brooklyn-class cruiser, Working class in the United States, Agosta-class submarine, Wickes-class destroyer, Valour-class frigate, Alvand-class frigate, Benjamin Franklin-class submarine, X class, R class, Heroine-class submarine, P class, Permit-class submarine

Class, CLASS, Economy class, Social class, C-class cruiser, Class discrimination, Lerici-class minehunter, Middle class, Working class, Upper class, Fiji-class cruiser, Class (computer programming), American middle class, Class consciousness, Polar Class, Gleaves-class destroyer, Class action, Hamilton-class cutter, DR Class 130 family, Ship class, Lekiu-class frigate, Class F, British U-class submarine, Halifax-class frigate, N class, Railroad classes, Seawolf-class submarine, Destiny-class cruise ship, American Flower-class corvette, Auk-class minesweeper, Visakhapatnam-class destroyer, Condottieri-class cruiser, Social class in the United States, Marxian class theory, Virginia-class submarine, Airspace class, Calypso class, Skipjack-class submarine, Astute-class submarine, Kidd-class destroyer, Province class, MHC class II, Lower middle class, Ohio-class submarine, Borei-class submarine, Kuma-class cruiser, Ruling class, A class, Accentor-class minesweeper, Upper middle class, Shchuka-class submarine, Business class, Plunger-class submarine, Class struggle, Hébé-class frigate, Tripartite-class minehunter, Charles F. Adams-class destroyer, T class, Moudge-class frigate, Noun class, Character class, Lupo-class frigate, Java class file, Brahmaputra-class frigate, City class, S-class ferry, Adjutant-class minesweeper, J class, Gato-class submarine, Barbel-class submarine, Trafalgar-class submarine, V class, Lower class, Gearing-class destroyer, U class, Brooke-class frigate, M class, Paulding-class destroyer, Grand-class cruise ship, Brooklyn-class cruiser, Working class in the United States, Agosta-class submarine, Wickes-class destroyer, Valour-class frigate, Alvand-class frigate, Benjamin Franklin-class submarine, X class, R class, Heroine-class submarine, P class, Permit-class submarine, Romeo-class submarine, Gawron-class corvette, Natick-class tugboat, Aditya-class auxiliary ship, Bogue-class escort carrier, Östergötland-class destroyer, Apollo-class cruiser, K class, Class analysis, Social class in the United Kingdom, Complexity class, GWR 4100 Class, Sōryū-class submarine, Pierre Radisson-class icebreaker, Talwar-class frigate, Inner class, Second class, Class stratification, O class, Echo-class submarine, H class, No.13-class submarine chaser, Castle class, Yasen-class submarine, NBR K Class, NBR N class, C++ classes, Mexican-American middle class, L class, Professional–managerial class, Tambor-class submarine, Town class, Kasturi-class corvette, County-class cruiser, MGWR Class L, Tarawa-class amphibious assault ship, C-class destroyer (1943), G class, Yūshio-class submarine, Elementary class, Inhaúma-class corvette, Godavari-class frigate, Knox-class frigate, Town-class cruiser (1936), Flower-class corvette, First class travel, A-class submarine (1903), Hatsuyuki-class destroyer, MHC class I, Nelson class, British Rail Class 317, Class B share, International A-class catamaran, Daphné-class submarine, Omaha-class cruiser, Abhay-class corvette, Travel class, Class of Heroes, C-class ferry, Kolkata-class destroyer