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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.

A055650 Numbers k such that k | phi(k)*d(k) - sigma(k), where phi=A000010, d=A000005 and sigma=A000203.

Table of values

n a(n)
1 1
2 3
3 14
4 42
5 76
6 376
7 3608
8 163712
9 163944
10 196128
11 277688
12 491136
13 833064
14 849120
15 905814
16 911008
17 1080328
18 1653520
19 1847898
20 1935128
21 2733024
22 3145216
23 3240984
24 4586240
25 4734736
26 4960560
27 5805384
28 13758720
29 16582752
30 25244956
31 34961040
32 38521440
33 48177990
34 56240352

List of values

[1, 3, 14, 42, 76, 376, 3608, 163712, 163944, 196128, 277688, 491136, 833064, 849120, 905814, 911008, 1080328, 1653520, 1847898, 1935128, 2733024, 3145216, 3240984, 4586240, 4734736, 4960560, 5805384, 13758720, 16582752, 25244956, 34961040, 38521440, 48177990, 56240352]

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

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