G.f. satisfies: A(x) = Sum_{n>=0} (A(x)^n + 1)^n * x^n / (1-2*x)^(n+1).
A251179
G.f. satisfies: A(x) = Sum_{n>=0} (A(x)^n + 1)^n * x^n / (1-2*x)^(n+1).
Terms
- a(0) =1a(1) =4a(2) =20a(3) =132a(4) =1140a(5) =11972a(6) =143156a(7) =1874180a(8) =26280820a(9) =389655492a(10) =6059296564a(11) =98301356292
External references
- oeis: A251179