G.f. A(x) satisfies 13*x = Sum_{n=-oo..+oo} (-1)^n * x^(13*n) * (A(x) + x^n)^(13*n) with A(0) = 1.
A380686
G.f. A(x) satisfies 13*x = Sum_{n=-oo..+oo} (-1)^n * x^(13*n) * (A(x) + x^n)^(13*n) with A(0) = 1.
Terms
- a(0) =1a(1) =7a(2) =63a(3) =630a(4) =6678a(5) =73458a(6) =829026a(7) =9533799a(8) =111227655a(9) =1312486329a(10) =15630519009a(11) =187566228108
External references
- oeis: A380686