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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.

A248201 Numbers n such that n-1, n and n+1 are all squarefree semiprimes.

Table of values

n a(n)
1 34
2 86
3 94
4 142
5 202
6 214
7 218
8 302
9 394
10 446
11 634
12 698
13 922
14 1042
15 1138
16 1262
17 1346
18 1402
19 1642
20 1762
21 1838
22 1894
23 1942
24 1982
25 2102
26 2182
27 2218
28 2306
29 2362
30 2434
31 2462
32 2518
33 2642
34 2722
35 2734
36 3098
37 3386
38 3602
39 3694
40 3866
41 3902
42 3958
43 4286
44 4414

List of values

[34, 86, 94, 142, 202, 214, 218, 302, 394, 446, 634, 698, 922, 1042, 1138, 1262, 1346, 1402, 1642, 1762, 1838, 1894, 1942, 1982, 2102, 2182, 2218, 2306, 2362, 2434, 2462, 2518, 2642, 2722, 2734, 3098, 3386, 3602, 3694, 3866, 3902, 3958, 4286, 4414]