E.g.f. A(x) satisfies A(x) = exp( x*(A(x) + A(w*x) + A(w^2*x))/3 ), where w = exp(2*Pi*i/3).
A385691
E.g.f. A(x) satisfies A(x) = exp( x*(A(x) + A(w*x) + A(w^2*x))/3 ), where w = exp(2*Pi*i/3).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =5a(5) =21a(6) =61a(7) =568a(8) =4257a(9) =20917a(10) =286451a(11) =3099141a(12) =21555865a(13) =390273898a(14) =5524889553a(15) =49790422501
External references
- oeis: A385691