Expansion of (Product_{k>=1} (1 - x^k)^2/(1 - 5*x^k + x^(2*k)) - 1)/3.

A387017

Expansion of (Product_{k>=1} (1 - x^k)^2/(1 - 5*x^k + x^(2*k)) - 1)/3.

Terms

    a(0) =1a(1) =6a(2) =28a(3) =139a(4) =660a(5) =3192a(6) =15260a(7) =73254a(8) =350848a(9) =1681650a(10) =8056608a(11) =38604748a(12) =184963130a(13) =886226880a(14) =4246152960a(15) =20344613659a(16) =97476826932a(17) =467039887908

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