|
%I #12 Nov 12 2016 19:53:11
%S 1,1,949,2647,6091583,309884803,24257706533,19423358539261,
%T 264554745901944637,217615549372227323,1019034322058704876807657,
%U 1439067424977073452007609,742090435456946501950120739,92447561714992144826576923831967
%N Numerator of [x^(2n+1)] in the Taylor series tan(cosec(x)-cosech(x)) = x/3 +x^3/81 +949*x^5/204120 +2647*x^7/5511240+... .
%H G. C. Greubel, <a href="/A013532/b013532.txt">Table of n, a(n) for n = 0..200</a>
%t Numerator[Take[CoefficientList[Series[Tan[Csc[x] - Csch[x]], {x, 0, 50}], x], {2, -1, 2}]] (* _G. C. Greubel_, Nov 12 2016 *)
%Y Cf. A068917.
%K nonn,frac
%O 0,3
%A Patrick Demichel (patrick.demichel(AT)hp.com)
%E Name edited by _R. J. Mathar_, Dec 20 2011
|
