# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a008961 Showing 1-1 of 1 %I A008961 #12 Jul 21 2018 16:02:38 %S A008961 1,-1,-23,-947,-1733,-21781,-43311113,-2723179,-6414155401, %T A008961 -785453333257,-7699945982293,-66166822052531,-239092621861482143, %U A008961 -271166505959717,-74473963890443961601,-163219188105035970948619,-153312677184465775645847,-625566886054776334597601 %N A008961 Numerators of Taylor series for 1/(sin x + tan x). %H A008961 G. C. Greubel, Table of n, a(n) for n = 0..269 %t A008961 Take[Numerator[CoefficientList[2x #&/@Normal[Series[1/(Sin[x]+Tan[x]),{x,0,40}]],x]],{1,-1,2}] (* _Harvey P. Dale_, Feb 11 2015 *) %Y A008961 Cf. A009724. %K A008961 sign,frac %O A008961 0,3 %A A008961 _N. J. A. Sloane_ %E A008961 More terms from _Harvey P. Dale_, Feb 11 2015 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE