A116654 Number of atomic species based on even permutation groups that are not substitutions of smaller species.

0, 1, 0, 1, 3, 4, 11, 15, 84, 59, 139, 168, 1232, 1079

Offset

0,5

Links

Table of n, a(n) for n=0..13.

Formula

Define b(n), c(n): b(1)=c(0)=0. b(k)=a(k), k>1. c(k)=A029726(k), k>0. A116653(n) is Dirichlet convolution of b and c.

Crossrefs

Sequence in context: A231067 A042327 A046114 * A041020 A041527 A290493

Adjacent sequences: A116651 A116652 A116653 * A116655 A116656 A116657

Keyword

nonn,hard

Author

Christian G. Bower, Feb 23 2006

Status

approved