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

3,4

Links

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

Formula

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

Crossrefs

Cf. A000726, A001935, A091602.

Sequence in context: A194189 A028249 A121833 * A027037 A276428 A020878

Adjacent sequences: A091603 A091604 A091605 * A091607 A091608 A091609

Keyword

nonn

Author

Christian G. Bower, Jan 23 2004

Status

approved