G.f. A(x) given by A(x) = 1+x*A(x)^2+x^2*A(x)^4+2*x^3*A(x)^6.
A186242
G.f. A(x) given by A(x) = 1+x*A(x)^2+x^2*A(x)^4+2*x^3*A(x)^6.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =13a(4) =62a(5) =317a(6) =1707a(7) =9529a(8) =54634a(9) =319838a(10) =1903895a(11) =11488985a(12) =70122538a(13) =432126645a(14) =2685003765a(15) =16802798157a(16) =105811579002a(17) =670008272170
External references
- oeis: A186242