A118636 Start with 1 and repeatedly reverse the digits and add 40 to get the next term.

1, 41, 54, 85, 98, 129, 961, 209, 942, 289, 1022, 2241, 1462, 2681, 1902, 2131, 1352, 2571, 1792, 3011, 1143, 3451, 1583, 3891, 2023, 3242, 2463, 3682, 2903, 3132, 2353, 3572, 2793, 4012, 2144, 4452, 2584, 4892, 3024, 4243, 3464, 4683, 3904, 4133, 3354

Offset: 1

Author

Luc Stevens (lms022(AT)yahoo.com), May 09 2006

Keywords

• base
• nonn

Links

• Harvey P. Dale, Table of n, a(n) for n = 1..1000
• N. J. A. Sloane and others, Sequences of RADD type, OEIS wiki.

Crossrefs

Cf. A117828, A117816, A117817.

Programs

Mathematica

NestList[FromDigits[Reverse[IntegerDigits[#]]]+40&,1,50]  (* Harvey P. Dale, Dec 26 2010 *)
NestList[IntegerReverse[#]+40&,1,50] (* Harvey P. Dale, Aug 05 2025 *)

Formula

Never reaches a cycle (see A117816).