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Denominator of the coefficient of [x^(2n)] of the Taylor series log(cosec(x)*arcsinh(x))= x^4/15 -x^6/30 +25*x^8/1134 -269*x^10/17010 +4401359*x^12/364864500-...
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%I #5 Mar 30 2012 17:40:30

%S 15,30,1134,17010,364864500,547296750,390769879500,976924698750,

%T 58468943220187500,17540682966056250,3234019037547375000,

%U 1397904728979852843750,1054020165650809044187500,10163765883061372926093750,3396527282801449604442009375000,2547395462101087203331507031250

%N Denominator of the coefficient of [x^(2n)] of the Taylor series log(cosec(x)*arcsinh(x))= x^4/15 -x^6/30 +25*x^8/1134 -269*x^10/17010 +4401359*x^12/364864500-...

%Y Cf. A012859 (numerators).

%K nonn,frac

%O 2,1

%A _R. J. Mathar_, Dec 20 2011