A368114 Trajectory of 11 under the '11x+1' map.

11, 122, 61, 672, 336, 168, 84, 42, 21, 7, 1, 12, 6, 3, 1, 12, 6, 3, 1, 12, 6, 3, 1, 12, 6, 3, 1, 12, 6, 3, 1, 12, 6, 3, 1, 12, 6, 3, 1, 12, 6, 3, 1, 12, 6, 3, 1, 12, 6, 3, 1, 12, 6, 3, 1, 12, 6, 3, 1, 12, 6, 3, 1, 12, 6, 3, 1, 12, 6, 3, 1, 12, 6, 3, 1, 12, 6, 3, 1

Offset: 0

Author

Paolo Xausa, Dec 12 2023

Keywords

• nonn
• easy

Comments

See A368085 for definition and cross references.

Links

• Index entries for linear recurrences with constant coefficients, signature (0,0,0,1).

Crossrefs

Cf. A368085.

Programs

Mathematica

Px1[p_,n_]:=Catch[For[i=1,i
				

Formula

G.f.: (11 + 122*x + 61*x^2 + 672*x^3 + 325*x^4 + 46*x^5 + 23*x^6 - 630*x^7 - 315*x^8 - 161*x^9 - 83*x^10 - 30*x^11 - 15*x^12 - 4*x^13)/(1 - x^4). - Stefano Spezia, Jun 09 2024