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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.

A309292 Numbers that can be written as the sum of two primes, p, q, where p < q such that q^2 - p^2 is squarefree.

Table of values

n a(n)
1 5
2 7
3 15
4 19
5 21
6 33
7 39
8 43
9 55
10 61
11 69
12 73
13 91
14 105
15 109
16 111
17 115
18 133
19 141
20 159
21 165
22 181
23 183
24 195
25 199
26 201
27 213
28 231
29 235
30 241
31 253
32 259
33 271
34 273
35 285
36 295
37 309
38 313
39 339
40 349
41 381
42 385
43 399
44 403
45 411
46 421
47 433
48 435
49 451
50 465
51 469
52 489
53 493
54 501
55 505

List of values

[5, 7, 15, 19, 21, 33, 39, 43, 55, 61, 69, 73, 91, 105, 109, 111, 115, 133, 141, 159, 165, 181, 183, 195, 199, 201, 213, 231, 235, 241, 253, 259, 271, 273, 285, 295, 309, 313, 339, 349, 381, 385, 399, 403, 411, 421, 433, 435, 451, 465, 469, 489, 493, 501, 505]

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

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