G.f. satisfies A(x) = 1 + x*(A(x)^2 + A(x)^4).
A219534
G.f. satisfies A(x) = 1 + x*(A(x)^2 + A(x)^4).
Terms
- a(0) =1a(1) =2a(2) =12a(3) =100a(4) =968a(5) =10208a(6) =113792a(7) =1318832a(8) =15732064a(9) =191878592a(10) =2381917824a(11) =29995598208a(12) =382257383168
External references
- oeis: A219534