G.f. A(x) satisfies: 4*x = Sum_{n=-oo..+oo} (-1)^n * x^(n*(n+1)/2) * A(x)^n.
A355354
G.f. A(x) satisfies: 4*x = Sum_{n=-oo..+oo} (-1)^n * x^(n*(n+1)/2) * A(x)^n.
Terms
- a(0) =1a(1) =4a(2) =28a(3) =196a(4) =1416a(5) =10860a(6) =87392a(7) =727188a(8) =6196212a(9) =53783336a(10) =474011756a(11) =4231158016a(12) =38174676188a(13) =347566170384
External references
- oeis: A355354