Denominators of the partial sums of the reciprocals of twice the pentagonal numbers.

A294513

Denominators of the partial sums of the reciprocals of twice the pentagonal numbers.

Terms

    a(0) =2a(1) =5a(2) =120a(3) =1320a(4) =9240a(5) =52360a(6) =52360a(7) =602140a(8) =70450380a(9) =2043061020a(10) =16344488160a(11) =3268897632a(12) =62109055008

External references