A050360 Abelian groups (factorizations into prime powers >1) indexed by prime signatures. A000688(A025487).

1, 1, 2, 1, 3, 2, 5, 3, 1, 7, 4, 5, 2, 11, 6, 7, 3, 15, 10, 4, 11, 1, 9, 5, 22, 14, 6, 15, 2, 15, 7, 30, 22, 10, 22, 3, 21, 8, 11, 42, 9, 30, 4, 25, 14, 30, 5, 33, 12, 15, 56, 15, 44, 1, 6, 35, 22, 42, 7, 45, 20, 22, 77, 21, 60, 2, 10, 55, 18, 30, 56, 8, 25, 11, 66, 28, 9, 30, 49, 101

Offset: 1

Author

Christian G. Bower, Oct 15 1999

Keywords

• nonn

Links

• Reinhard Zumkeller, Table of n, a(n) for n = 1..10000
• Index entries for sequences related to groups

Crossrefs

Cf. A000041, A000688, A000961, A050361-A050364.

Cf. A025487.

Programs

Haskell

a050360 = a000688 . a025487  -- Reinhard Zumkeller, Aug 28 2014

Extensions

More terms from David Wasserman, Feb 14 2002