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

0,2

Links

Table of n, a(n) for n=0..28.

Formula

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

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 *)

Crossrefs

Cf. A375550.

Sequence in context: A215054 A350643 A114014 * A229515 A320907 A258458

Adjacent sequences: A375546 A375547 A375548 * A375550 A375551 A375552

Keyword

nonn

Author

Peter Luschny, Sep 23 2024

Status

approved