A373658 a(n) = Sum_{k=0..n} binomial(n, k)*A050446(n, n - k). Alternating row sums of A373660.

1, 3, 13, 88, 749, 8128, 105453, 1606368, 28047561, 552980736, 12149820237, 294451219712, 7803392603109, 224513730740224, 6969658947747357, 232210548740331008, 8265038127738534417, 312994090288528379904, 12565925964816171109069, 533124629548518534705152

Offset: 0

Author

Peter Luschny, Jun 13 2024

Keywords

• nonn

Crossrefs

Cf. A050446, A373660.

Programs

Maple

a := n -> local k; add(binomial(n, k) * A050446(n, n - k), k = 0..n):
seq(a(n), n = 0..19);