Denominators of successive partial sums of sum(1/(2^n-1)).

A087690

Denominators of successive partial sums of sum(1/(2^n-1)).

Terms

    a(0) =1a(1) =3a(2) =21a(3) =35a(4) =1085a(5) =9765a(6) =1240155a(7) =21082635a(8) =1539032355a(9) =16929355905

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