a(n) = [x^n] Product_{k>=1} (1 + x^k)^J_n(k), where J_() is the Jordan function.

A321265

a(n) = [x^n] Product_{k>=1} (1 + x^k)^J_n(k), where J_() is the Jordan function.

Terms

    a(0) =1a(1) =1a(2) =3a(3) =33a(4) =425a(5) =12083a(6) =665707a(7) =68834806a(8) =13654633905

External references