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Denominators of e.g.f. cosec(arctanh(x)).
1

%I #10 Aug 18 2019 13:53:40

%S 6,12,126,72,22,252,126,144,7182,2772,4554,1512,378,84,14322,2464,42,

%T 14364,342,792,1251558,191268,136206,21168,594,1188,33858,1368,1062,

%U 257796,128898,576,6407478,17388,295218,948024,79002,158004,89586,14256

%N Denominators of e.g.f. cosec(arctanh(x)).

%e cosec(arctanh(x)) = 1/x - x/6 - 1/12*x^3/3! + 125/126x^5/5! +...

%e cosech(arctan(x)) = 1/x + x/6 - 1/12*x^3/3! - 125/126x^5/5! +...

%p G:=series(csc(arctanh(x)),x=0,92): seq(denom((2*n-1)!*coeff(G,x^(2*n-1))), n=1..45); # _Emeric Deutsch_, Feb 25 2005

%Y Numerators are in A102076. Probably differs from A102062.

%K nonn,frac

%O 1,1

%A _Ralf Stephan_, Dec 31 2004

%E More terms from _Emeric Deutsch_, Feb 25 2005