Class number of real quadratic field with discriminant 4n, n == 2,3 ( mod 4).

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =2a(8) =1a(9) =1a(10) =1a(11) =2a(12) =2a(13) =1a(14) =2a(15) =2a(16) =1a(17) =2a(18) =2a(19) =1a(20) =1a(21) =1a(22) =2a(23) =2a(24) =2a(25) =1a(26) =1a(27) =2a(28) =1a(29) =2