%I A013261
%S A013261 1,1,6,23,90,509,1960,7251,20160,1028821,16750008,249844519,
%T A013261 3354647296,42644099135,506129014560,4945670890617,23557830350976,
%U A013261 694520543221487,32533456838195320,956551460942273757
%V A013261 -1,1,-6,23,-90,509,-1960,7251,20160,-1028821,16750008,-249844519,
%W A013261 3354647296,-42644099135,506129014560,-4945670890617,23557830350976,
%X A013261 694520543221487,-32533456838195320,956551460942273757
%N A013261 arctan(log(x+1)-sinh(x))=-1/2!*x^2+1/3!*x^3-6/4!*x^4+23/5!*x^5...
%Y A013261 Sequence in context: A027043 A006815 A054491 this_sequence A013265 A038383 
               A120775
%Y A013261 Adjacent sequences: A013258 A013259 A013260 this_sequence A013262 A013263 
               A013264
%K A013261 sign
%O A013261 0,3
%A A013261 Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)