A081409 a(n) = binomial(n!, lcm(1,...,n)).

1, 1, 1, 2704156, 96614908840363322603893139521372656, 26390396795222677975727207509769281627761276862587589456302534175336254818515595864127888

Offset

0,4

Links

Table of n, a(n) for n=0..5.

Formula

a(n) = binomial(A000142(n), A003418(n)).

Prog

(PARI) a(n) = binomial(n!, lcm(vector(n, k, k))); \\ Michel Marcus, Mar 15 2018

Crossrefs

Cf. A000142, A003418.

Sequence in context: A178291 A212231 A317286 * A251997 A104848 A234370

Adjacent sequences: A081406 A081407 A081408 * A081410 A081411 A081412

Keyword

nonn

Author

Labos Elemer, Apr 01 2003

Status

approved