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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.

A326416 The numbers k for which gcd(k, phi(k)) + gcd(k, tau(k)) = gcd(k, sigma(k)).

Table of values

n a(n)
1 3040
2 9440
3 22240
4 27360
5 28640
6 30080
7 50560
8 54288
9 60640
10 67040
11 76752
12 79840
13 99040
14 105440
15 109888
16 118240
17 137440
18 152960
19 163040
20 189072
21 200160
22 201440
23 211536
24 233440
25 234880
26 239840
27 249216
28 252640
29 256128
30 256464
31 259040
32 271840
33 278928
34 296320

List of values

[3040, 9440, 22240, 27360, 28640, 30080, 50560, 54288, 60640, 67040, 76752, 79840, 99040, 105440, 109888, 118240, 137440, 152960, 163040, 189072, 200160, 201440, 211536, 233440, 234880, 239840, 249216, 252640, 256128, 256464, 259040, 271840, 278928, 296320]

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

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