G.f. A(x) satisfies: A(x) = 1 + x + x^2 * A(x/(1 - x)) / (1 - x)^5.
A351648
G.f. A(x) satisfies: A(x) = 1 + x + x^2 * A(x/(1 - x)) / (1 - x)^5.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =6a(4) =22a(5) =69a(6) =224a(7) =819a(8) =3296a(9) =13942a(10) =60941a(11) =276399a(12) =1309207a(13) =6479609a(14) =33377271a(15) =178186018a(16) =983386188a(17) =5604262733a(18) =32955823822a(19) =199771724691
External references
- oeis: A351648