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%I #8 Jul 18 2018 18:47:29
%S 0,0,2,-3,16,-50,80,924,-24544,320832,-4041152,44762960,-443911360,
%T 3134031264,10007901696,-1090110964320,32403860361216,
%U -748994799421952,15182814672728064,-270877746698076672,3931180447615393792,-28568579846042019840,-934246098808782868480
%N Expansion of e.g.f. tanh(tan(x) * log(x+1)).
%e 2/2!*x^2 - 3/3!*x^3 + 16/4!*x^4 - 50/5!*x^5 ...
%K sign
%O 0,3
%A Patrick Demichel (patrick.demichel(AT)hp.com)
%E a(0) and a(1) inserted and title improved by _Sean A. Irvine_, Jul 18 2018
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