Expansion of g.f. A(x) satisfying Sum_{n=-oo..+oo} (-1)^n * (x^n + 7*A(x))^n = 1 + 9*Sum_{n>=1} (-1)^n * x^(n^2).
A370027
Expansion of g.f. A(x) satisfying Sum_{n=-oo..+oo} (-1)^n * (x^n + 7*A(x))^n = 1 + 9*Sum_{n>=1} (-1)^n * x^(n^2).
Terms
- a(0) =1a(1) =7a(2) =52a(3) =405a(4) =3250a(5) =26541a(6) =219311a(7) =1828657a(8) =15360068a(9) =129802889a(10) =1102476535a(11) =9403920685a(12) =80507808128a(13) =691425600548
External references
- oeis: A370027