A108288 Main diagonal of table A060543; a(n) = C((n+1)^2-1, n*(n+1)).

1, 3, 28, 455, 10626, 324632, 12271512, 553270671, 28987537150, 1731030945644, 116068178638776, 8634941152058949, 705873715441872264, 62895036884524942320, 6067037854078498539696, 629921975126394617164575, 70043473196734767582082230

Offset

0,2

Links

Table of n, a(n) for n=0..16.

Formula

a(n) = A060545(n+1). - R. J. Mathar, Aug 24 2008

Prog

(PARI) a(n)=binomial((n+1)^2-1, n*(n+1))

Crossrefs

Cf. A060545, A108267, A060543, A108289.

Sequence in context: A340789 A210854 A060545 * A327362 A327071 A346315

Adjacent sequences: A108285 A108286 A108287 * A108289 A108290 A108291

Keyword

nonn

Author

Paul D. Hanna, May 31 2005

Status

approved