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.

A019288 Let sigma_m (n) be result of applying sum-of-divisors function m times to n; call n (m,k)-perfect if sigma_m (n) = k*n; sequence gives the (2,11)-perfect numbers.

Table of values

n a(n)
1 4404480
2 57669920
3 238608384

List of values

[4404480, 57669920, 238608384]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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