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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.

A029913 Start with n; if prime, stop; repeatedly sum squares of prime factors (counted with multiplicity), until reach 16 or a prime; set a(n) = 0 if no limit exists.

Table of values

n a(n)
2 2
3 3
4 17
5 5
6 13
7 7
8 17
9 59
10 29
11 11
12 17
13 13
14 53
15 293
16 16
17 17
18 59
19 19

List of values

[2, 3, 17, 5, 13, 7, 17, 59, 29, 11, 17, 13, 53, 293, 16, 17, 59, 19]

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

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