G.f. satisfies A(x) = exp( Sum_{k>=1} (-1)^(k+1) * A(x^k) * (4*x)^k/k ).
A363443
G.f. satisfies A(x) = exp( Sum_{k>=1} (-1)^(k+1) * A(x^k) * (4*x)^k/k ).
Terms
- a(0) =1a(1) =4a(2) =16a(3) =128a(4) =864a(5) =6912a(6) =55936a(7) =470016a(8) =4025600a(9) =35144704a(10) =311190784a(11) =2789206016a(12) =25254028288a(13) =230652174336
External references
- oeis: A363443