A101355 a(n) = binomial(2*binomial(2*n,n-1),binomial(2*n,n-1)-1).

1, 56, 145422675, 383737587959312915862780874001472, 104855671593334873537054726960536206227962383788929048378607066138235834636350039247224047185071025086703803882342429773895200

Offset

0,2

Links

Table of n, a(n) for n=0..4.

Maple

seq(binomial(2*binomial(2*n, n-1), binomial(2*n, n-1)-1), n=1..5);

Crossrefs

Sequence in context: A076181 A278893 A375778 * A285179 A307938 A244190

Adjacent sequences: A101352 A101353 A101354 * A101356 A101357 A101358

Keyword

nonn

Author

Jorge Coveiro, Dec 25 2004

Status

approved