cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

Showing 1-2 of 2 results.

A033654 Trajectory of 17 under map x->x + (x-with-digits-reversed).

Original entry on oeis.org

17, 88, 176, 847, 1595, 7546, 14003, 44044, 88088, 176176, 847847, 1596595, 7553546, 14007103, 44177144, 88354288, 176599676, 853595347, 1597190705, 6668108656, 13236127322, 35608290553, 71117571206
Offset: 0

Views

Author

N. J. A. Sloane

Keywords

Links

Crossrefs

Essentially the same as A033652.

A033661 Trajectory of 31 under map x->x + (x-with-digits-reversed).

Original entry on oeis.org

31, 44, 88, 176, 847, 1595, 7546, 14003, 44044, 88088, 176176, 847847, 1596595, 7553546, 14007103, 44177144, 88354288, 176599676, 853595347, 1597190705, 6668108656, 13236127322, 35608290553, 71117571206
Offset: 0

Views

Author

N. J. A. Sloane

Keywords

Links

Programs

  • Mathematica
    NestList[#+IntegerReverse[#]&,31,30] (* Requires Mathematica version 10 or later *) (* Harvey P. Dale, Nov 23 2016 *)

Formula

a(n) = A033654(n-1) = A033652(n+1), n>1. [From R. J. Mathar, Oct 22 2008]
Showing 1-2 of 2 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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