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.

A037423 Positive numbers having the same set of digits in base 4 and base 5.

Original entry on oeis.org

1, 2, 3, 28, 37, 76, 132, 137, 152, 167, 183, 205, 210, 217, 280, 380, 407, 411, 413, 431, 441, 451, 455, 657, 660, 676, 692, 710, 711, 713, 717, 888, 903, 915, 917, 918, 933, 941, 957, 1035, 1051, 1075, 1076, 1258, 1266, 1278, 1282, 1286, 1291, 1305
Offset: 1

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Author

Keywords

Programs

  • Mathematica
    Select[Range@ 1400, Union@ IntegerDigits[#, 4] == Union@ IntegerDigits[#, 5] &] (* Michael De Vlieger, Feb 07 2017 *)
  • PARI
    is(n)=Set(digits(n, 4))==Set(digits(n, 5)) \\ Charles R Greathouse IV, Feb 11 2017

Extensions

Edited by Don Reble, Apr 28 2006
Name edited by John Cerkan, Feb 06 2017