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.

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A032551 Numbers that, when expressed in base 8 and then interpreted in base 10, yield a multiple of the original number.

Original entry on oeis.org

0, 1, 2, 3, 4, 5, 6, 7, 34217, 34354, 68582, 68719, 68720, 70525, 70537, 70674, 104891, 104902, 105039, 105040, 106845, 139257, 141211, 141348, 175577, 175714, 177519, 177520, 177668, 211885, 212022, 212034, 213839, 213840, 248205, 248342, 250148
Offset: 1

Views

Author

Patrick De Geest, Apr 15 1998

Keywords

Comments

Decimal 'base-8 looking' numbers divided by their actual base-8 value is an integer.
There are only 37 terms up to 30 million. - Harvey P. Dale, Sep 29 2012

Examples

			7 in base 8 is 7, which interpreted in base 10 is 7=1*7.
		

Crossrefs

Cf. A032552. See also A032532.

Programs

  • Mathematica
    Join[{0},Select[Range[300000],Divisible[FromDigits[ IntegerDigits[ #,8]],#]&]] (* Harvey P. Dale, Sep 29 2012 *)

Extensions

Edited by N. J. A. Sloane, Jun 07 2008 at the suggestion of Sergio Pimentel
Name edited by Jon E. Schoenfield, Oct 25 2019
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