G.f. A(x) satisfies A(x) = 1 / ((1 - x) * (1 - 3 * x * A(x)^2)).
A349254
G.f. A(x) satisfies A(x) = 1 / ((1 - x) * (1 - 3 * x * A(x)^2)).
Terms
- a(0) =1a(1) =4a(2) =37a(3) =478a(4) =7159a(5) =116497a(6) =2000386a(7) =35671756a(8) =654218641a(9) =12261271942a(10) =233798163646
External references
- oeis: A349254