E.g.f. satisfies A(x) = exp(x^2*A(x)) / (1-x).
A371038
E.g.f. satisfies A(x) = exp(x^2*A(x)) / (1-x).
Terms
- a(0) =1a(1) =1a(2) =4a(3) =18a(4) =132a(5) =1140a(6) =12720a(7) =164640a(8) =2514960a(9) =43500240a(10) =850076640a(11) =18418609440a(12) =439831909440
External references
- oeis: A371038