Class number of quadratic field with discriminant -4n as n runs through A089269: squarefree numbers congruent to 1 or 2 mod 4.
A006643
Class number of quadratic field with discriminant -4n as n runs through A089269: squarefree numbers congruent to 1 or 2 mod 4.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =2a(4) =2a(5) =2a(6) =4a(7) =4a(8) =4a(9) =2a(10) =6a(11) =6a(12) =4a(13) =4a(14) =4a(15) =2a(16) =6a(17) =8a(18) =4a(19) =4a(20) =6a(21) =4a(22) =2a(23) =6a(24) =8a(25) =8a(26) =8a(27) =8a(28) =4a(29) =4
External references
- oeis: A006643