A101356 Binomial( 2*binomial(2*n,n-1),n-1).

1, 8, 435, 227920, 1278098745, 82575323184816, 65027115220581214701, 650673256738362079479972000, 85317908524399246240116500743559745, 150076667939221169116862871933576383129271760

Offset

0,2

Links

Table of n, a(n) for n=0..9.

Maple

seq(binomial(2*binomial(2*n, n-1), n-1), n=1..10);

Mathematica

Table[Binomial[2Binomial[2n, n-1], n-1], {n, 10}] (* Harvey P. Dale, Jul 08 2014 *)

Crossrefs

Sequence in context: A186419 A371560 A007701 * A231102 A231824 A069442

Adjacent sequences: A101353 A101354 A101355 * A101357 A101358 A101359

Keyword

nonn

Author

Jorge Coveiro, Dec 25 2004

Status

approved