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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.

A058620 Lesser of two consecutive primes whose difference divided by two is a prime: ( prime(next prime after n) - prime(n) )/2 is prime.

Table of values

n a(n)
1 7
2 13
3 19
4 23
5 31
6 37
7 43
8 47
9 53
10 61
11 67
12 73
13 79
14 83
15 97
16 103
17 109
18 113
19 127
20 131
21 139
22 151
23 157
24 163
25 167
26 173
27 181
28 193
29 223
30 229
31 233
32 241
33 251
34 257
35 263
36 271
37 277
38 283
39 293
40 307
41 313
42 317
43 331
44 337
45 349
46 353
47 367
48 373
49 379
50 383
51 397
52 409
53 421
54 433
55 439

List of values

[7, 13, 19, 23, 31, 37, 43, 47, 53, 61, 67, 73, 79, 83, 97, 103, 109, 113, 127, 131, 139, 151, 157, 163, 167, 173, 181, 193, 223, 229, 233, 241, 251, 257, 263, 271, 277, 283, 293, 307, 313, 317, 331, 337, 349, 353, 367, 373, 379, 383, 397, 409, 421, 433, 439]

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

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