G.f. A(x) satisfies: A(x) = 1 + x^2 * A(x/(1 - 3*x)) / (1 - 3*x).
A351144
G.f. A(x) satisfies: A(x) = 1 + x^2 * A(x/(1 - 3*x)) / (1 - 3*x).
Terms
- a(0) =1a(1) =0a(2) =1a(3) =3a(4) =10a(5) =39a(6) =181a(7) =972a(8) =5797a(9) =37389a(10) =258202a(11) =1905681a(12) =15016465a(13) =125920872a(14) =1117950913a(15) =10452866439a(16) =102485649754
External references
- oeis: A351144