Search: id:A053508
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%I A053508
%S A053508 0,0,0,1,20,360,6860,143360,3306744,84000000,2338460520,70946979840,
%T A053508 2332989862060,82726831323136,3148511132812500,128071114403348480,
%U A053508 5546563698427324720,254873089955815096320,12387799656377835411984
%N A053508 binomial(n-1,3)*n^(n-4).
%D A053508 R. P. Stanley, Enumerative Combinatorics, Cambridge, Vol. 2, 1999; see 
               Prop. 5.3.2.
%F A053508 E.g.f.: 1/4!*LambertW(-x)^4. - Vladeta Jovovic (vladeta(AT)eunet.rs), 
               Apr 07 2001
%Y A053508 Cf. A000169, A053506-A053509.
%Y A053508 Sequence in context: A156455 A089350 A004292 this_sequence A060918 A115100 
               A049683
%Y A053508 Adjacent sequences: A053505 A053506 A053507 this_sequence A053509 A053510 
               A053511
%K A053508 nonn
%O A053508 1,5
%A A053508 N. J. A. Sloane (njas(AT)research.att.com), Jan 15 2000

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