Search: id:A067273
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%I A067273
%S A067273 0,1,6,39,316,3165,37986,531811,8508984,153161721,3063234430,
%T A067273 67391157471,1617387779316,42052082262229,1177458303342426,
%U A067273 35323749100272795,1130359971208729456,38432239021096801521
%N A067273 a(n)=n*(a(n-1)*2+1), a(0)=0.
%F A067273 E.g.f.: x*exp(x)/(1-2*x). a(n) = n!*Sum_{k=1..n} 2^(k-1)/(n-k)! = n*A010844(n-1). 
               - Vladeta Jovovic (vladeta(AT)eunet.rs), Feb 09 2003
%t A067273 s=1;lst={};Do[s+=(s*=n)-n;AppendTo[lst, Abs[s]], {n, 0, 5!, 1}];lst [From 
               Vladimir Orlovsky (4vladimir(AT)gmail.com), Nov 15 2008]
%Y A067273 Cf. A007526.
%Y A067273 Sequence in context: A103194 A009018 A135890 this_sequence A137972 A007322 
               A058191
%Y A067273 Adjacent sequences: A067270 A067271 A067272 this_sequence A067274 A067275 
               A067276
%K A067273 nonn
%O A067273 0,3
%A A067273 Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Feb 21 2002
%E A067273 More terms and Mathematica program Vladimir Orlovsky (4vladimir(AT)gmail.com), 
               Nov 15 2008

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