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 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 REFERENCES R. Donaghey, Binomial self-inverse sequences and tangent coefficients, J. Combin. Theory, Series A, 21 (1976), 155-163. LINKS Vincenzo Librandi, Table of n, a(n) for n = 0..200 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 * A177354 A109253 A052797 Adjacent sequences:  A027389 A027390 A027391 * A027393 A027394 A027395 KEYWORD nonn AUTHOR STATUS approved

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Last modified May 20 00:42 EDT 2013. Contains 225443 sequences.