%I A013459
%S A013459 1,0,1,4,9,40,385,2700,15505,145360,1886625,19796500,190881625,
%T A013459 2654379000,44269902625,625468889500,8553276590625,156119043652000,
%U A013459 3194978818578625,57041478987070500,1012878775075155625
%V A013459 1,0,1,-4,9,-40,385,-2700,15505,-145360,1886625,-19796500,190881625,
%W A013459 -2654379000,44269902625,-625468889500,8553276590625,
%X A013459 -156119043652000,3194978818578625,-57041478987070500
%N A013459 exp(arctan(x)-log(x+1))=1+1/2!*x^2-4/3!*x^3+9/4!*x^4-40/5!*x^5...
%o A013459 (PARI) a(n)=polcoeff(exp(atan(x))/(1+x),n)*n! [From Jaume Oliver Lafont 
               (joliverlafont(AT)gmail.com), Oct 24 2009]
%Y A013459 Sequence in context: A149164 A073414 A085110 this_sequence A041229 A042887 
               A053908
%Y A013459 Adjacent sequences: A013456 A013457 A013458 this_sequence A013460 A013461 
               A013462
%K A013459 sign
%O A013459 0,4
%A A013459 Patrick Demichel (dml(AT)hpfrcu03.france.hp.com)