Numerators of partial alternating sums of Catalan numbers scaled by powers of 1/(5*3^2) = 1/45.

A121008

Numerators of partial alternating sums of Catalan numbers scaled by powers of 1/(5*3^2) = 1/45.

Terms

    a(0) =1a(1) =44a(2) =1982a(3) =17837a(4) =4013339a(5) =60200071a(6) =2709003239a(7) =121905145612a(8) =658287786362

External references