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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A160962 Perfect numbers written in base 4.

Original entry on oeis.org

12, 130, 13300, 1333000, 1333333000000, 13333333300000000, 1333333333000000000, 1333333333333333000000000000000, 1333333333333333333333333333333000000000000000000000000000000
Offset: 1

Views

Author

Vladislav-Stepan Malakhovsky and Juri-Stepan Gerasimov, May 31 2009

Keywords

Links

Crossrefs

Cf. A000043, A000396, A000668, A135650, A161322.

Programs

  • Mathematica
    Map[FromDigits[IntegerDigits[#, 4]] &, PerfectNumber[Range[10]]] (* Amiram Eldar, Oct 16 2024 *)

Formula

a(n) = A007090(A000396(n)). - Amiram Eldar, Oct 16 2024

Extensions

Edited by N. J. A. Sloane, Jun 07 2009
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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