A027411 Number of labeled servers of dimension 24.

1, 24, 852, 37744, 1966524, 116700000, 7724244400, 561784372800, 44396860502400, 3779370642880000, 344139248144428800, 33327371339580595200, 3416104056409100425600, 369103767451972835251200

Offset

0,2

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..200

R. Donaghey, Binomial self-inverse sequences and tangent coefficients, J. Combin. Theory, Series A, 21 (1976), 155-163.

Formula

E.g.f.: exp( sum( ((1+x)^i-1)/i, i=1..24 ) ).

Mathematica

Table[n!*SeriesCoefficient[E^(Sum[((1+x)^i - 1)/i, {i, 1, 24}]), {x, 0, n}], {n, 0, 20}] (* Vincenzo Librandi, Jan 01 2013 *)

Crossrefs

Sequence in context: A208792 A195130 A005149 * A184281 A220176 A275563

Adjacent sequences: A027408 A027409 A027410 * A027412 A027413 A027414

Keyword

nonn

Author

Olivier Gérard

Status

approved