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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.

A230482 a(n) = (prime(prime(2*n)) - prime(2*prime(n)))/2.

Table of values

n a(n)
1 -1
2 2
3 6
4 12
5 15
6 28
7 26
8 39
9 42
10 41
11 54
12 44
13 63
14 72
15 63
16 81
17 75
18 102
19 105
20 105
21 124
22 121
23 117
24 174
25 133
26 134
27 160
28 181
29 190
30 197
31 152
32 198
33 170
34 240
35 189
36 210
37 233
38 243
39 238
40 232
41 249
42 289
43 238
44 283
45 296
46 339
47 300
48 228
49 262
50 330
51 357
52 371
53 384
54 378
55 372

List of values

[-1, 2, 6, 12, 15, 28, 26, 39, 42, 41, 54, 44, 63, 72, 63, 81, 75, 102, 105, 105, 124, 121, 117, 174, 133, 134, 160, 181, 190, 197, 152, 198, 170, 240, 189, 210, 233, 243, 238, 232, 249, 289, 238, 283, 296, 339, 300, 228, 262, 330, 357, 371, 384, 378, 372]

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

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