A188937 Let G be the class group of the imaginary quadratic field Q(sqrt(-A188661(n))); the 2-Sylow subgroup of G is cyclic of order 2^a(n).

2, 3, 3, 4, 5, 6, 8, 9, 6, 10, 7, 6, 9, 8, 10

Offset: 1

Author

N. J. A. Sloane, Apr 14 2011

Keywords

• nonn
• more

Links

• Daniel Shanks, Gauss's ternary form reduction and the 2-Sylow subgroup, Math. Comp. 25 (1971), 837-853.