A152476 Inverse binomial transform of A005329.

1, 0, 2, 14, 246, 8374, 560950, 74018118, 19314751526, 10004153405174, 10313935405968726, 21205201672407811750, 87047013055579706265862, 713958711370466820900197334, 11705348549229324549016264190006

Offset: 0

Author

Vladeta Jovovic, Dec 05 2008

Keywords

• easy
• nonn

Links

• G. C. Greubel, Table of n, a(n) for n = 0..50

Crossrefs

Cf. A075272.

Programs

Mathematica

Table[Sum[(-1)^(n+k) Binomial[n, k] QFactorial[k, 2], {k, 0, n}], {n, 0, 15}] (* Vladimir Reshetnikov, Nov 20 2015 *)

Formula

a(n) ~ c * 2^(n*(n+1)/2), where c = A048651 = 0.2887880950866... . - Vaclav Kotesovec, Nov 21 2015