cp's OEIS Frontend

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.

A228649 Numbers n such that n-1, n and n+1 are all squarefree.

Table of values

n a(n)
1 2
2 6
3 14
4 22
5 30
6 34
7 38
8 42
9 58
10 66
11 70
12 78
13 86
14 94
15 102
16 106
17 110
18 114
19 130
20 138
21 142
22 158
23 166
24 178
25 182
26 186
27 194
28 202
29 210
30 214
31 218
32 222
33 230
34 238
35 254
36 258
37 266
38 282
39 286
40 302
41 310
42 318
43 322
44 330
45 346
46 354
47 358
48 366
49 382
50 390
51 394
52 398
53 402
54 410
55 418
56 430
57 434
58 438
59 446
60 454
61 462
62 466
63 470
64 482
65 498

List of values

[2, 6, 14, 22, 30, 34, 38, 42, 58, 66, 70, 78, 86, 94, 102, 106, 110, 114, 130, 138, 142, 158, 166, 178, 182, 186, 194, 202, 210, 214, 218, 222, 230, 238, 254, 258, 266, 282, 286, 302, 310, 318, 322, 330, 346, 354, 358, 366, 382, 390, 394, 398, 402, 410, 418, 430, 434, 438, 446, 454, 462, 466, 470, 482, 498]

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

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