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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.

A135240 Numbers n such that phi(sigma(n))=2n.

Table of values

n	a(n)
1	36
2	20575296

List of values

[36, 20575296]

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

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