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

A361213

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

Terms

    a(0) =1a(1) =2a(2) =8a(3) =68a(4) =848a(5) =14192a(6) =298048a(7) =7546016a(8) =223792640a(9) =7612381952a(10) =292216807424

External references