G.f. A(x) satisfies A(x) = 1/(1 - x*A(x*A(x)))^2.
A381572
G.f. A(x) satisfies A(x) = 1/(1 - x*A(x*A(x)))^2.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =38a(4) =267a(5) =2232a(6) =21200a(7) =222556a(8) =2536661a(9) =31010886a(10) =403097573a(11) =5535291884a(12) =79900803514
External references
- oeis: A381572