A091606 Column 3 of triangle A091602.

1, 0, 1, 2, 3, 3, 6, 7, 11, 14, 20, 25, 35, 43, 58, 73, 95, 118, 152, 187, 237, 291, 363, 443, 549, 665, 815, 985, 1197, 1437, 1737, 2075, 2491, 2966, 3539, 4195, 4984, 5882, 6955, 8183, 9633, 11291, 13246, 15474, 18085, 21066, 24536, 28495, 33092, 38321

Offset: 3

Author

Christian G. Bower, Jan 23 2004

Keywords

• nonn

Links

• Alois P. Heinz, Table of n, a(n) for n = 3..1000

Crossrefs

Cf. A000726, A001935, A091602.

Formula

a(n) = A001935(n) - A000726(n).