A118529 Start with 1 and repeatedly reverse the digits and add 12 to get the next term.

1, 13, 43, 46, 76, 79, 109, 913, 331, 145, 553, 367, 775, 589, 997, 811, 130, 43, 46, 76, 79, 109, 913, 331, 145, 553, 367, 775, 589, 997, 811, 130, 43, 46, 76, 79, 109, 913, 331, 145, 553, 367, 775, 589, 997, 811, 130, 43, 46, 76, 79, 109, 913, 331

Offset

1,2

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.

Index entries for periodic sequences.

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

Formula

After 2 steps enters a cycle of length 15.

Mathematica

NestList[IntegerReverse[#]+12&, 1, 60] (* Harvey P. Dale, Dec 16 2024 *)

Prog

(PARI) a(n)=if(n>2, [997, 811, 130, 43, 46, 76, 79, 109, 913, 331, 145, 553, 367, 775, 589][n%15+1], 12*n-11) \\ Charles R Greathouse IV, May 29 2026

Crossrefs

Cf. A117828, A117816, A117817.

Sequence in context: A071632 A259427 A118857 * A340480 A129811 A108545

Adjacent sequences: A118526 A118527 A118528 * A118530 A118531 A118532

Keyword

nonn,base,easy

Author

N. J. A. Sloane, May 06 2006

Status

approved