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.

A021007 Let q_k = p*(p+2) be product of k-th pair of twin primes; sequence gives values of p+2 such that (q_k)^2 > q_{k-i}*q_{k+i} for all 1 <= i <= k-1.

Table of values

n a(n)
1 5
2 13
3 31
4 61
5 103
6 139
7 181
8 193
9 229
10 421
11 523
12 571
13 601
14 811
15 823
16 1021
17 1231
18 1279
19 1291
20 1609
21 1669
22 1873
23 2083
24 2551
25 2659
26 2689
27 2971
28 3121
29 3253
30 3331
31 3361
32 3769
33 3823
34 3919
35 4003
36 5233
37 5419
38 5479
39 6091
40 6271
41 6553
42 6661
43 6691
44 8221
45 8821
46 8971

List of values

[5, 13, 31, 61, 103, 139, 181, 193, 229, 421, 523, 571, 601, 811, 823, 1021, 1231, 1279, 1291, 1609, 1669, 1873, 2083, 2551, 2659, 2689, 2971, 3121, 3253, 3331, 3361, 3769, 3823, 3919, 4003, 5233, 5419, 5479, 6091, 6271, 6553, 6661, 6691, 8221, 8821, 8971]