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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.

A321502 Numbers m such that m and m+1 have at least 2, but m or m+1 has at least 3 prime divisors.

Table of values

n a(n)
1 65
2 69
3 77
4 84
5 90
6 104
7 105
8 110
9 114
10 119
11 129
12 132
13 140
14 153
15 154
16 155
17 164
18 165
19 170
20 174
21 182
22 185
23 186
24 189
25 194
26 195
27 203
28 204
29 209
30 219
31 220
32 221
33 230
34 231
35 234
36 237
37 245
38 246
39 252
40 254
41 258
42 259
43 260
44 264
45 265
46 266
47 272
48 273
49 275
50 279
51 284
52 285
53 286
54 290
55 294
56 299
57 300
58 305

List of values

[65, 69, 77, 84, 90, 104, 105, 110, 114, 119, 129, 132, 140, 153, 154, 155, 164, 165, 170, 174, 182, 185, 186, 189, 194, 195, 203, 204, 209, 219, 220, 221, 230, 231, 234, 237, 245, 246, 252, 254, 258, 259, 260, 264, 265, 266, 272, 273, 275, 279, 284, 285, 286, 290, 294, 299, 300, 305]

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

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