Let d(1)=1 and d(n) = d(n-1)*n^(2n-2)*(2n-1)^(3-2n). Then a(n) = denominator(d(n)).

A114877

Let d(1)=1 and d(n) = d(n-1)*n^(2n-2)*(2n-1)^(3-2n). Then a(n) = denominator(d(n)).

Terms

    a(0) =1a(1) =3a(2) =125a(3) =2100875a(4) =2977309629

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