G.f. A(x) satisfies 1/x = Sum_{n=-oo..+oo} A(x)^n * (A(x)^n + 2)^(n+1).
A379202
G.f. A(x) satisfies 1/x = Sum_{n=-oo..+oo} A(x)^n * (A(x)^n + 2)^(n+1).
Terms
- a(0) =1a(1) =4a(2) =20a(3) =122a(4) =850a(5) =6432a(6) =51324a(7) =424694a(8) =3608592a(9) =31291658a(10) =275774228a(11) =2462835772a(12) =22239367632a(13) =202713590686
External references
- oeis: A379202