A192310 1-sequence of reduction of (3n-1) by x^2 -> x+1.

0, 5, 13, 35, 77, 162, 322, 621, 1167, 2153, 3913, 7028, 12500, 22053, 38641, 67311, 116661, 201302, 346006, 592685, 1012115, 1723605, 2927953, 4962600, 8393832, 14170757, 23882197, 40184891, 67516637, 113283018, 189830698, 317726253, 531200535, 887182913

Offset: 1

Author

Clark Kimberling, Jun 27 2011

Keywords

• nonn

Comments

See A192232 for definition of "k-sequence of reduction of [sequence] by [substitution]".

Crossrefs

Cf. A192232, A192309.

Programs

Mathematica

(* See A192309. *)

Formula

Empirical g.f.: x^2*(5-2*x+x^2)/(1-x)/(1-x-x^2)^2. - Colin Barker, Feb 11 2012

Extensions

More terms from Jason Yuen, Aug 23 2025