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%I #10 Jan 08 2024 02:24:46
%S 1,2,5,1,85,221,8177,204425,204425,8381425,13023445,10327591885,
%T 1497500823325,115192371025,1334876299525,512859474277505,
%U 131804884889318785,38766142614505525,100791970797714365,91216733571931500325,7315582032468906326065,124364894551971407543105,60316973857706132658405925,3196799614458425030895514025
%N Denominators corresponding to A190948.
%o (PARI) a(n) = denominator(sum(k=0, n, binomial(n,k)*(-1)^k/(k^2+1))); \\ _Michel Marcus_, Jan 08 2024
%Y Cf. A190948.
%K nonn,frac
%O 0,2
%A _N. J. A. Sloane_, May 24 2011
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