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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.

A325639 Numbers n for which A091255(n, sigma(n)) = n.

Table of values

n a(n)
1 1
2 6
3 28
4 120
5 312
6 428
7 456
8 496
9 504
10 672
11 760
12 6552
13 8128
14 30240
15 31452
16 32760
17 429240
18 523776
19 2178540
20 5009850
21 7505976
22 23569920
23 33550336
24 45532800
25 142990848
26 186076800
27 379975680

List of values

[1, 6, 28, 120, 312, 428, 456, 496, 504, 672, 760, 6552, 8128, 30240, 31452, 32760, 429240, 523776, 2178540, 5009850, 7505976, 23569920, 33550336, 45532800, 142990848, 186076800, 379975680]

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

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