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

Author

Christian G. Bower, Feb 23 2006

Keywords

• nonn
• hard

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.