%I A012473
%S A012473 1,0,1,3,6,60,0,2310,10752,84168,1152240,2453880,154467192,797768400,
%T A012473 16907851688,250017997320,1746679208128,77446551835648,
%U A012473 318565680255360,18241668233387712,262053618149070080
%V A012473 1,0,-1,3,6,-60,0,2310,-10752,-84168,1152240,2453880,-154467192,
%W A012473 797768400,16907851688,-250017997320,-1746679208128,77446551835648,
%X A012473 -318565680255360,-18241668233387712,262053618149070080
%N A012473 sech(cos(x)*log(x+1))=1-1/2!*x^2+3/3!*x^3+6/4!*x^4-60/5!*x^5...
%Y A012473 Sequence in context: A045914 A067610 A067609 this_sequence A058161 A012877 
               A103066
%Y A012473 Adjacent sequences: A012470 A012471 A012472 this_sequence A012474 A012475 
               A012476
%K A012473 sign
%O A012473 0,4
%A A012473 Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)