A325871 a(n) = n!*ClausenNumber(n, 1)/(n + 1), Clausen numbers defined in A160014.

1, 1, 4, 3, 144, 40, 4320, 1260, 134400, 72576, 21772800, 6652800, 100590336000, 889574400, 34871316480, 163459296000, 627683696640000, 39520825344000, 268899695640576000, 12164510040883200, 38231317271347200000, 4644631106519040000, 6744004366665646080000

Offset

0,3

Links

Table of n, a(n) for n=0..22.

Formula

a(n) = A194587(n, n).

Maple

# Function Clausen defined in A160014.
seq(n!*Clausen(n, 1)/(n+1), n=0..27);

Crossrefs

Cf. A160014, A194587.

Sequence in context: A266255 A351792 A362674 * A079324 A002298 A195565

Adjacent sequences: A325868 A325869 A325870 * A325872 A325873 A325874

Keyword

nonn

Author

Peter Luschny, Jun 26 2019

Status

approved