Self-COMPOSE of A107700; thus g.f. A(x) = G(G(x)) = x + 2*G(x)^2, where G(x) is the g.f. of A107700.
A107701
Self-COMPOSE of A107700; thus g.f. A(x) = G(G(x)) = x + 2*G(x)^2, where G(x) is the g.f. of A107700.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =6a(4) =4a(5) =-6a(6) =-8a(7) =44a(8) =52a(9) =-520a(10) =-580a(11) =8628a(12) =9312a(13) =-188326a(14) =-199136a(15) =5210560a(16) =5435860a(17) =-178308938a(18) =-184306176a(19) =7409693156a(20) =7608810060a(21) =-368330924160a(22) =-376418726640
External references
- oeis: A107701