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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.

A055196 Primitive numbers k that divide sigma(k)*phi(k).

Table of values

n a(n)
1 6
2 28
3 40
4 117
5 135
6 496
7 775
8 891
9 1701
10 2176
11 5632
12 6875
13 8128
14 18688
15 23552
16 26624
17 44375
18 88723
19 89667
20 91136
21 274625
22 352256
23 557375
24 628849
25 722701
26 796797
27 1071875
28 1200663
29 1288625
30 1358127
31 1512875
32 2246503
33 2473984
34 2490368
35 2896363
36 2909375

List of values

[6, 28, 40, 117, 135, 496, 775, 891, 1701, 2176, 5632, 6875, 8128, 18688, 23552, 26624, 44375, 88723, 89667, 91136, 274625, 352256, 557375, 628849, 722701, 796797, 1071875, 1200663, 1288625, 1358127, 1512875, 2246503, 2473984, 2490368, 2896363, 2909375]

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

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