%I A009153
%S A009153 1,0,1,6,29,140,757,4858,36409,302520,2681769,25018510,245905365,
%T A009153 2559272196,28264854685,330408571202,4065526003313,52349977261040,
%U A009153 702393407898705,9795673312888214,141820637175889805
%N A009153 Expansion of cosh(sinh(x).exp(x)).
%F A009153 a(n) = Sum_{k=0..n} Stirling2(n, k)*(1+(-1)^k)/2*2^(n-k). - Vladeta Jovovic 
               (vladeta(AT)eunet.rs), Sep 26 2003
%t A009153 Cosh[ Sinh[ x ]*Exp[ x ] ]
%Y A009153 Cf. A009599, A065143.
%Y A009153 Sequence in context: A026884 A110311 A030221 this_sequence A012325 A125785 
               A108982
%Y A009153 Adjacent sequences: A009150 A009151 A009152 this_sequence A009154 A009155 
               A009156
%K A009153 nonn,easy
%O A009153 0,4
%A A009153 R. H. Hardin (rhhardin(AT)att.net)
%E A009153 Extended and signs tested Mar 15 1997 by Olivier Gerard.