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.

A047847 Numbers n such that n + (n+1) and (n+2) + (n+3) are both prime.

Table of values

n a(n)
1 1
2 3
3 6
4 9
5 18
6 21
7 33
8 39
9 48
10 51
11 54
12 63
13 81
14 96
15 111
16 114
17 138
18 153
19 156
20 174
21 189
22 198
23 219
24 228
25 231
26 243
27 249
28 306
29 321
30 336
31 369
32 378
33 384
34 411
35 426
36 429
37 438
38 441
39 453
40 468
41 483
42 504
43 543
44 546
45 606
46 639
47 648
48 651
49 711
50 714
51 723
52 741
53 744
54 774
55 783
56 789

List of values

[1, 3, 6, 9, 18, 21, 33, 39, 48, 51, 54, 63, 81, 96, 111, 114, 138, 153, 156, 174, 189, 198, 219, 228, 231, 243, 249, 306, 321, 336, 369, 378, 384, 411, 426, 429, 438, 441, 453, 468, 483, 504, 543, 546, 606, 639, 648, 651, 711, 714, 723, 741, 744, 774, 783, 789]