E.g.f. satisfies A(x) = exp( x * A(x) / (1-x)^2 ) / (1-x).

A377599

E.g.f. satisfies A(x) = exp( x * A(x) / (1-x)^2 ) / (1-x).

Terms

    a(0) =1a(1) =2a(2) =13a(3) =145a(4) =2277a(5) =46461a(6) =1172713a(7) =35374697a(8) =1243296169a(9) =49940748073

External references