A118220 Start with 1 and repeatedly reverse the digits and add 72 to get the next term.

1, 73, 109, 973, 451, 226, 694, 568, 937, 811, 190, 163, 433, 406, 676, 748, 919, 991, 271, 244, 514, 487, 856, 730, 109, 973, 451, 226, 694, 568, 937, 811, 190, 163, 433, 406, 676, 748, 919, 991, 271, 244, 514, 487, 856, 730, 109, 973, 451, 226, 694, 568

Offset

1,2

Comments

After 2 steps enters a cycle of length 22.

Links

Table of n, a(n) for n=1..52.

N. J. A. Sloane and others, Sequences of RADD type, OEIS wiki.

Mathematica

NestList[IntegerReverse[#]+72&, 1, 60] (* Requires Mathematica version 10 or later *) (* or *) PadRight[{1, 73}, 60, {856, 730, 109, 973, 451, 226, 694, 568, 937, 811, 190, 163, 433, 406, 676, 748, 919, 991, 271, 244, 514, 487}] (* Harvey P. Dale, Apr 15 2020 *)

Crossrefs

Cf. A117828, A117816, A117817.

Sequence in context: A180522 A238679 A157120 * A144050 A087878 A142196

Adjacent sequences: A118217 A118218 A118219 * A118221 A118222 A118223

Keyword

base,nonn,less

Author

Luc Stevens (lms022(AT)yahoo.com), May 14 2006

Extensions

Corrected by Harvey P. Dale, Apr 15 2020

Status

approved