A027403 Number of labeled servers of dimension 16.

1, 16, 376, 10976, 375656, 14609408, 632482048, 30038407168, 1547935822048, 85815220940288, 5083125473103104, 319891827126416384, 21287781712576632064, 1492000159056959340544, 109753069487230722187264

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..16 ) ).

Mathematica

Table[n!*SeriesCoefficient[E^(Sum[((1+x)^i - 1)/i, {i, 1, 16}]), {x, 0, n}], {n, 0, 20}] (* Vincenzo Librandi, Jan 01 2013 *)

Crossrefs

Sequence in context: A240458 A240891 A241106 * A264073 A333581 A201617

Adjacent sequences: A027400 A027401 A027402 * A027404 A027405 A027406

Keyword

nonn

Author

Olivier Gérard

Status

approved