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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.

A214266 Numbers n such that n, phi(n) and sigma(n) have same set of prime factors.

Table of values

n a(n)
1 1
2 103654150315463023813006470
3 207308300630926047626012940
4 414616601261852095252025880
5 518270751577315119065032350
6 829233202523704190504051760
7 982794906694760522078876160
8 1036541503154630238130064700

List of values

[1, 103654150315463023813006470, 207308300630926047626012940, 414616601261852095252025880, 518270751577315119065032350, 829233202523704190504051760, 982794906694760522078876160, 1036541503154630238130064700]

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

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