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%I #13 Feb 16 2021 17:54:22
%S 1,12,180,1680,12600,166320,2522520,576576,22054032,465585120,
%T 2560718160,64250746560,348024877200,1124388064800,4990906206000,
%U 165032631878400,350694342741600,2599263952084800,101515697684200800
%N Denominators of coefficients in -log(1+x)log(1-x) power series.
%F a(n) = n*A076100(n) (conjectured). - _F. Chapoton_, Nov 09 2009
%o (PARI) my(x='x+O('x^50), v=Vec(-log(1+x)*log(1-x))); apply(denominator, vector(#v\2, k, v[2*k-1])) \\ _Michel Marcus_, Feb 16 2021
%Y Cf. A049281, A076100.
%K easy,frac,nonn
%O 1,2
%A _Benoit Cloitre_, May 03 2002
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