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A037256
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Solution to "Unfriendly Seating Arrangement" problem.
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2
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0, 1, 2, 10, 48, 296, 2080, 16752, 151424, 1519744, 16766208, 201685760, 2627316736, 36847260672, 553551644672, 8868624615424, 150943592939520, 2719816264613888, 51724646086475776, 1035359388788391936
(list; graph; refs; listen; history; internal format)
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OFFSET
| 0,3
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REFERENCES
| SIAM Review, Problem 62-3, 1962, pp. 180ff.
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LINKS
| Philippe Flajolet, A SEATING ARRANGEMENT PROBLEM
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FORMULA
| E.g.f.: (1-exp(-2*x))*(1-x)^(-2)/2.
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MATHEMATICA
| m = 19; CoefficientList[ Series[(1 - Exp[-2x])*(1/((1-x)^2*2)), {x, 0, m}], x]*Range[0, m]!
(* From Jean-François Alcover, Jun 28 2011 *)
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CROSSREFS
| Sequence in context: A200540 A166922 A129118 * A052576 A143147 A180266
Adjacent sequences: A037253 A037254 A037255 * A037257 A037258 A037259
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KEYWORD
| nonn
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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