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.

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

Crossrefs

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