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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.

A387712 Primitive terms of A387711: numbers k for which A003959(k) > 2*k, but for all whose proper divisors d|k, d A003959(d) <= 2*d.

Table of values

n a(n)
1 4
2 18
3 27
4 30
5 42
6 45
7 50
8 63
9 66
10 70
11 78
12 102
13 114
14 138
15 174
16 186
17 222
18 246
19 258
20 282
21 318
22 354
23 366
24 375
25 402
26 426
27 438
28 474
29 498
30 525
31 534
32 582
33 606
34 618
35 625
36 642
37 654
38 678
39 686
40 735
41 762
42 786
43 822
44 825
45 834
46 894
47 906
48 942
49 975
50 978
51 1002
52 1038
53 1074
54 1078
55 1086
56 1089
57 1146
58 1158
59 1182
60 1194
61 1210
62 1266
63 1274
64 1275

List of values

[4, 18, 27, 30, 42, 45, 50, 63, 66, 70, 78, 102, 114, 138, 174, 186, 222, 246, 258, 282, 318, 354, 366, 375, 402, 426, 438, 474, 498, 525, 534, 582, 606, 618, 625, 642, 654, 678, 686, 735, 762, 786, 822, 825, 834, 894, 906, 942, 975, 978, 1002, 1038, 1074, 1078, 1086, 1089, 1146, 1158, 1182, 1194, 1210, 1266, 1274, 1275]

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