O.g.f. A(x) satisfies: [x^n] exp(n*A(x)) * (1 - n*x - n*x^2) = 0, for n > 0.
A321086
O.g.f. A(x) satisfies: [x^n] exp(n*A(x)) * (1 - n*x - n*x^2) = 0, for n > 0.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =32a(4) =220a(5) =1812a(6) =17108a(7) =180512a(8) =2093760a(9) =26396160a(10) =358741328a(11) =5223336288a(12) =81079811280
External references
- oeis: A321086