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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.

A095682 Primitive 1+prime power perfect numbers: if n=Product p_i^r_i then 1PPsigma(n)= Product {Sum p_i^r_i, 1<=s_i<=r_i, s_i is one or prime} 1PPsigma(n)=2*n.

Table of values

n a(n)
1 36
2 392
3 152352
4 6072901632
5 1444601174400

List of values

[36, 392, 152352, 6072901632, 1444601174400]

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

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