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.

A037438 Positive numbers having the same set of digits in base 7 and base 8.

Original entry on oeis.org

1, 2, 3, 4, 5, 6, 94, 133, 220, 227, 305, 385, 597, 620, 629, 1043, 1059, 1195, 1441, 1540, 1571, 1893, 1904, 1905, 1906, 1907, 1908, 1909, 1910, 2086, 2278, 3080, 3170, 4165, 4200, 4365, 4389, 4464, 4483, 4504, 4512, 4880, 5156, 5202, 5211
Offset: 1

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Keywords

Examples

			227 is in the sequence because 227 in base 7 is 443 and in base 8 it is 343.
		

Crossrefs

Subsequence of A037402.

Programs

  • Mathematica
    Select[Range[6000],Union[IntegerDigits[#,7]]==Union[IntegerDigits[#,8]]&] (* Harvey P. Dale, Jul 22 2015 *)

Extensions

More terms from Don Reble, Apr 28 2006
Edited by John Cerkan, Feb 17 2017