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.

A205643 (2,k)-perfect numbers (A019278) such that the next (2,k)-perfect number has the same value of k (in A098223).

Original entry on oeis.org

2, 84, 480, 32256, 58254, 61440, 1556480, 3932160, 1505806848, 107870873600, 1098437885952
Offset: 1

Views

Author

Jud McCranie, Feb 08 2012

Keywords

Comments

a(12) > 4*10^12, if it exists. - Giovanni Resta, Feb 26 2020

Crossrefs

Cf. A019278, A098223.

Extensions

a(11) from Giovanni Resta, Feb 26 2020

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