Heegner numbers: imaginary quadratic fields with unique factorization (or class number 1).

A003173

Heegner numbers: imaginary quadratic fields with unique factorization (or class number 1).

Terms

    a(0) =1a(1) =2a(2) =3a(3) =7a(4) =11a(5) =19a(6) =43a(7) =67a(8) =163

External references