A375549 Row sums of A375550.

1, 7, 33, 129, 450, 1452, 4424, 12896, 36288, 99200, 264704, 691968, 1777152, 4494336, 11212800, 27639808, 67403776, 162791424, 389742592, 925696000, 2182742016, 5112594432, 11901861888, 27550285824, 63438848000, 145366188032, 331584897024, 753146003456, 1703860502528

Offset: 0

Author

Peter Luschny, Sep 23 2024

Keywords

• nonn

Crossrefs

Cf. A375550.

Programs

Mathematica

Table[Sum[Binomial[n+1, n-k] * HypergeometricPFQ[{4, k-n}, {k+2}, -1], {k, 0, n}], {n, 0, 30}] (* Vaclav Kotesovec, Sep 23 2024 *)

Formula

a(n) ~ 2^(n-6) * n^4 / 3. - Vaclav Kotesovec, Sep 23 2024