Number of labeled Abelian groups of order n.

Terms

a(0) =1a(1) =2a(2) =3a(3) =16a(4) =30a(5) =360a(6) =840a(7) =15360a(8) =68040a(9) =907200a(10) =3991680a(11) =159667200a(12) =518918400a(13) =14529715200a(14) =163459296000