A146534 4*C(2n,n)-3*0^n.

1, 8, 24, 80, 280, 1008, 3696, 13728, 51480, 194480, 739024, 2821728, 10816624, 41602400, 160466400, 620470080, 2404321560, 9334424880, 36300541200, 141381055200, 551386115280, 2153031497760

Offset

0,2

Links

Table of n, a(n) for n=0..21.

Formula

a(n)=Sum_{k, 0<=k<=n}A039599(n,k)*A010688(k).

Crossrefs

Cf. A088218, A000984, A029651, A100320, A029609, A144706, A146533

Sequence in context: A179609 A241690 A141317 * A180888 A296400 A297808

Adjacent sequences: A146531 A146532 A146533 * A146535 A146536 A146537

Keyword

nonn

Author

Philippe Deléham, Oct 31 2008

Extensions

Corrected typo. - Philippe Deléham, Oct 31 2008

Status

approved