login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A027401 Number of labeled servers of dimension 14. 1
1, 14, 287, 7294, 217049, 7331702, 275462383, 11345500934, 506714842193, 24333314152798, 1247903186686079, 67963075644539726, 3912399735781945513, 237116383434817605446, 15077800699956919811471 (list; graph; refs; listen; history; text; internal format)
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..14 ) ).

MATHEMATICA

Table[n!*SeriesCoefficient[E^(Sum[((1+x)^i - 1)/i, {i, 1, 14}]), {x, 0, n}], {n, 0, 20}] (* Vincenzo Librandi, Dec 31 2012 *)

CROSSREFS

Sequence in context: A053101 A205746 A281607 * A259432 A233069 A181192

Adjacent sequences:  A027398 A027399 A027400 * A027402 A027403 A027404

KEYWORD

nonn

AUTHOR

Olivier Gérard

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified November 22 08:46 EST 2019. Contains 329389 sequences. (Running on oeis4.)