cp's OEIS Frontend

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.

A263674 Double interprimes: a(n) = (q+r)/2 = (p+s)/2 with p consecutive primes.

Table of values

n a(n)
1 9
2 12
3 15
4 18
5 30
6 42
7 60
8 81
9 102
10 105
11 108
12 120
13 144
14 165
15 186
16 195
17 228
18 260
19 270
20 312
21 363
22 381
23 399
24 420
25 426
26 441
27 462
28 489
29 495
30 552
31 570
32 582
33 600
34 696
35 705
36 714
37 765
38 816
39 825
40 858
41 870
42 882
43 897
44 924
45 987
46 1026
47 1050
48 1056
49 1092
50 1113
51 1167
52 1230

List of values

[9, 12, 15, 18, 30, 42, 60, 81, 102, 105, 108, 120, 144, 165, 186, 195, 228, 260, 270, 312, 363, 381, 399, 420, 426, 441, 462, 489, 495, 552, 570, 582, 600, 696, 705, 714, 765, 816, 825, 858, 870, 882, 897, 924, 987, 1026, 1050, 1056, 1092, 1113, 1167, 1230]