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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.

A258142 Consider the unitary aliquot parts, in ascending order, of a composite number. Take their sum and repeat the process deleting the minimum number and adding the previous sum. The sequence lists the numbers that after some iterations reach a sum equal to themselves.

Table of values

n a(n)
1 6
2 21
3 60
4 85
5 90
6 261
7 976
8 2009
9 87360
10 97273
11 4948133
12 68353213

List of values

[6, 21, 60, 85, 90, 261, 976, 2009, 87360, 97273, 4948133, 68353213]

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

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