%I A012700
%S A012700 2,3,16,50,608,4284,53856,517824,7365312,93511440,1542037440,
%T A012700 24197565600,452937477120,8397165641760,176769352058880,
%U A012700 3770083289172480,88455117393715200,2127638031857717760
%V A012700 2,-3,16,-50,608,-4284,53856,-517824,7365312,-93511440,1542037440,
%W A012700 -24197565600,452937477120,-8397165641760,176769352058880,
%X A012700 -3770083289172480,88455117393715200,-2127638031857717760
%N A012700 tan(arctanh(x)*log(x+1))=2/2!*x^2-3/3!*x^3+16/4!*x^4-50/5!*x^5...
%Y A012700 Sequence in context: A012699 A012354 A012358 this_sequence A012705 A103331 
               A052506
%Y A012700 Adjacent sequences: A012697 A012698 A012699 this_sequence A012701 A012702 
               A012703
%K A012700 sign
%O A012700 0,1
%A A012700 Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)