%I A009199
%S A009199 1,0,2,6,34,220,1688,14868,147684,1631376,19821912,262573080,
%T A009199 3764276712,58044604176,957653604672,16828739439120,313742795670288,
%U A009199 6183918938706048,128463999017594016,2804979941504113248
%V A009199 1,0,2,-6,34,-220,1688,-14868,147684,-1631376,19821912,-262573080,
%W A009199 3764276712,-58044604176,957653604672,-16828739439120,313742795670288,
%X A009199 -6183918938706048,128463999017594016,-2804979941504113248
%N A009199 Expansion of exp(ln(1+x)^2).
%H A009199 INRIA Algorithms Project, <a href="http://algo.inria.fr/bin/encyclopedia?Search=ECSnb&argsearch=128">
               Encyclopedia of Combinatorial Structures 128</a>
%F A009199 Sum_{k=0..floor(n/2)} Stirling1(n, 2*k)*(2*k)!/k!. - Vladeta Jovovic 
               (vladeta(AT)eunet.rs), Sep 21 2003
%t A009199 Exp[ Log[ 1+x ]^2 ]
%Y A009199 Sequence in context: A030233 A003499 A018953 this_sequence A052824 A019029 
               A019032
%Y A009199 Adjacent sequences: A009196 A009197 A009198 this_sequence A009200 A009201 
               A009202
%K A009199 sign,easy
%O A009199 0,3
%A A009199 R. H. Hardin (rhhardin(AT)att.net)
%E A009199 Extended with signs Mar 15 1997 by Olivier Gerard.