Search: id:A049447
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%I A049447
%S A049447 1,45,1155,22275,359502,5135130,67128490,820784250,9528822303,
%T A049447 106175395755,1144614626805,12011282644725,123272476465204,
%U A049447 1241963303533920,12320068811796900,120622574326072500
%N A049447 Stirling numbers of second kind: 9th column of Stirling2 triangle A008277.
%C A049447 Cf. A000225, A000392, A000453, A000481, A000770, A000771, A049434.
%D A049447 See A000771.
%F A049447 a(n)= A008277(n, 9). G.f.: x^9/product(1-k*x, k=1..9). E.g.f.: ((exp(x)-1)^9)/
               9!.
%t A049447 lst={};Do[f=StirlingS2[n, 9];AppendTo[lst, f], {n, 9, 5!}];lst [From 
               Vladimir Orlovsky (4vladimir(AT)gmail.com), Sep 27 2008]
%Y A049447 Sequence in context: A010997 A163721 A140346 this_sequence A143400 A004350 
               A075515
%Y A049447 Adjacent sequences: A049444 A049445 A049446 this_sequence A049448 A049449 
               A049450
%K A049447 easy,nonn
%O A049447 9,2
%A A049447 Wolfdieter Lang (wolfdieter.lang(AT)physik.uni-karlsruhe.de)

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