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A025542
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(1/binomial(0,0) - 1/binomial(2,1) + ... + d/binomial(2n,n))*L, where d = (-1)^n, L = LCM{binomial(0,0), binomial(2,1),..., binomial(2n,n)}.
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0
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%I #4 Mar 30 2012 18:56:03
%S 1,1,4,37,265,790,8705,226225,226253,3846175,73077955,73077790,
%T 1680790160,8403949513,25211849540,1462287258305,45330905127575,
%U 45330905096635,45330905104591,1677243488794285,1677243488813665
%N (1/binomial(0,0) - 1/binomial(2,1) + ... + d/binomial(2n,n))*L, where d = (-1)^n, L = LCM{binomial(0,0), binomial(2,1),..., binomial(2n,n)}.
%K nonn
%O 0,3
%A _Clark Kimberling_
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