A012870 - OEIS

%I #5 Dec 22 2011 15:32:29

%S 2,124,292,65528,22998766228,26598037736,176612002738088,

%T 14801902575616661729776,32359766312586630724,

%U 169555914608329772744042648,26741840557472966493223060731901928

%N Numerator of [x^(4n+2)] in the Taylor series -log(cot(x)*tanh(x))= 2*x^2/3 +124*x^6/2835 +292*x^10/66825 +65528*x^14/127702575 -...

%C The inner function is cot(x)*tanh(x) = 1 -2*x^2/3 +2*x^4/9 -88*x^6/945 +106*x^8/2835 -2368*x^10/155925 +...

%K nonn,frac

%O 0,1

%A Patrick Demichel (patrick.demichel(AT)hp.com)

%E Values replaced by numerators. - R. J. Mathar, Dec 22 2011