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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.

A350316 Totient numbers k such that 3*k is a nontotient.

Table of values

n a(n)
1 1
2 30
3 58
4 78
5 82
6 106
7 130
8 138
9 150
10 172
11 178
12 198
13 222
14 226
15 238
16 268
17 282
18 316
19 342
20 358
21 366
22 378
23 382
24 388
25 418
26 438
27 462
28 478
29 498
30 502
31 506
32 508
33 546
34 562
35 570
36 598
37 606
38 618
39 630
40 642
41 646
42 652
43 658
44 682
45 690
46 718
47 738
48 742
49 772
50 786
51 810
52 826
53 838

List of values

[1, 30, 58, 78, 82, 106, 130, 138, 150, 172, 178, 198, 222, 226, 238, 268, 282, 316, 342, 358, 366, 378, 382, 388, 418, 438, 462, 478, 498, 502, 506, 508, 546, 562, 570, 598, 606, 618, 630, 642, 646, 652, 658, 682, 690, 718, 738, 742, 772, 786, 810, 826, 838]