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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.

A069231 Numbers n such that there are exactly 3 primes p satisfying the inequality n < p < n + tau(n)^2 where tau(n) = A000005(n).

Table of values

n a(n)
1 4
2 9
3 21
4 51
5 55
6 62
7 74
8 77
9 82
10 86
11 87
12 91
13 106
14 122
15 123
16 129
17 134
18 142
19 143
20 145
21 146
22 155
23 158
24 159
25 161
26 177
27 183
28 214
29 215
30 217
31 237
32 249
33 254
34 259
35 265
36 274
37 278
38 298
39 299
40 301
41 309
42 334
43 335
44 339
45 341
46 343
47 358
48 365
49 371
50 377
51 382
52 386
53 394
54 395
55 407

List of values

[4, 9, 21, 51, 55, 62, 74, 77, 82, 86, 87, 91, 106, 122, 123, 129, 134, 142, 143, 145, 146, 155, 158, 159, 161, 177, 183, 214, 215, 217, 237, 249, 254, 259, 265, 274, 278, 298, 299, 301, 309, 334, 335, 339, 341, 343, 358, 365, 371, 377, 382, 386, 394, 395, 407]

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

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