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%I #13 Dec 26 2018 21:36:34
%S 0,0,1,-3,5,10,-116,126,6054,-68760,255336,3099360,-53045136,55156608,
%T 10024873104,-175247246160,693221858736,29064929199744,
%U -605379922107648,-445102785680256,264990555297131904,-5736069117714297600
%N Expansion of log(1+log(1+x)^2)/2.
%H Robert Israel, <a href="/A024329/b024329.txt">Table of n, a(n) for n = 0..447</a>
%F E.g.f. log(1+log(1+x)^2)/2. - _Robert Israel_, Dec 26 2018
%p S:= series(log(1+log(1+x)^2)/2,x,31):
%p seq(coeff(S,x,n)*n!,n=0..30); # _Robert Israel_, Dec 26 2018
%t Log[ 1+Log[ 1+x ]^2 ]/2
%Y Cf. A009325.
%K sign
%O 0,4
%A _R. H. Hardin_
%E Extended with signs, Mar 1997
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