Consider real quadratic fields of ERD-type with class groups of exponent 2 and discriminants of the form D = r^2*k^2+4k, k odd; sequence gives values of k.
A051998
Consider real quadratic fields of ERD-type with class groups of exponent 2 and discriminants of the form D = r^2*k^2+4k, k odd; sequence gives values of k.
Terms
- a(0) =1a(1) =-15a(2) =-5a(3) =-17a(4) =-19a(5) =-21a(6) =1a(7) =-3a(8) =1a(9) =1a(10) =5a(11) =3a(12) =-33a(13) =1a(14) =-35a(15) =-5a(16) =5a(17) =-39a(18) =-13a(19) =-41a(20) =3a(21) =1a(22) =1a(23) =-15a(24) =-3a(25) =3a(26) =5a(27) =15a(28) =-7a(29) =-51
External references
- oeis: A051998