G.f. A(x) satisfies A(x) = (1 + x*A(x)^3) * (1 + x*A(x))^2.
A379249
G.f. A(x) satisfies A(x) = (1 + x*A(x)^3) * (1 + x*A(x))^2.
Terms
- a(0) =1a(1) =3a(2) =18a(3) =148a(4) =1403a(5) =14417a(6) =156161a(7) =1755664a(8) =20293341a(9) =239654554a(10) =2879027132a(11) =35072400492a(12) =432238230583
External references
- oeis: A379249