A070789 Integers n such that the 'Reverse and Add!' trajectory of n joins the trajectory of 1.

1, 2, 4, 8, 16, 25, 34, 43, 52, 59, 61, 68, 70, 77, 86, 95, 104, 109, 151, 154, 155, 157, 203, 208, 209, 250, 253, 254, 256, 302, 307, 308, 352, 353, 355, 401, 406, 407, 409, 451, 452, 454, 500, 505, 506, 508, 550, 551, 553, 604, 605, 607, 650, 652, 703, 704

Offset: 1

Author

Klaus Brockhaus, May 07 2002

Keywords

• base
• nonn

Examples

			The trajectory of 2 is part of the trajectory of 1; the trajectory of 401 joins the trajectory of 1 at 1111 after 3 steps.
		

Links

• Index entries for sequences related to Reverse and Add!

Crossrefs

Cf. A070788, A070790 - A070798, A063049.

Programs

Mathematica

limit = 10^3; x = NestList[ # + IntegerReverse[#] &, 1, limit];
Select[Range[704],
 Intersection[NestList[ # + IntegerReverse[#] &, #, limit],
x] != {} &] (* Robert Price, Oct 20 2019 *)