A169641 Start with n, apply the map k -> A169639(k) until trajectory converges; sequence give full list of the 20 possible limit points.

177, 246, 245, 236, 230, 178, 244, 275, 295, 342, 274, 326, 247, 253, 281, 285, 293, 333, 286, 302

Offset: 1

Author

Jacques ALARDET, Apr 04 2010

Keywords

• nonn
• word

Comments

There is a slight ambiguity in the definition, but I believe these are all the numbers which eventually return to themselves under iteration of k -> A169639(k). - N. J. A. Sloane, Jun 11 2021

Extensions

Edited by N. J. A. Sloane, Apr 05 2010