A152476 Inverse binomial transform of A005329.

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

Offset

0,3

Links

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

Formula

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

Mathematica

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

Crossrefs

Cf. A075272.

Sequence in context: A053855 A219344 A343441 * A373870 A070813 A156214

Adjacent sequences: A152473 A152474 A152475 * A152477 A152478 A152479

Keyword

easy,nonn

Author

Vladeta Jovovic, Dec 05 2008

Status

approved