login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A027392 Number of labeled servers of dimension 5. 1
1, 5, 35, 295, 2855, 30899, 367345, 4736765, 65621105, 969466645, 15182851451, 250823689055, 4352985062935, 79083190500995, 1499493878690105, 29595296385870949, 606610493947464545, 12885821188298643365 (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( (x*(300 + 300*x + 200*x^2 + 75*x^3 + 12*x^4))/60 ).

MATHEMATICA

Table[n!*SeriesCoefficient[E^((x * (300 + 300 * x + 200 * x^2 + 75 * x^3 + 12 * x^4))/60), {x, 0, n}], {n, 0, 20}] (* Vincenzo Librandi, Dec 31 2012 *)

CROSSREFS

Sequence in context: A002294 A051406 A000356 * A291813 A177354 A253096

Adjacent sequences:  A027389 A027390 A027391 * A027393 A027394 A027395

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 February 24 18:55 EST 2021. Contains 341584 sequences. (Running on oeis4.)