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.

A230699 Sequence of pairs k,g such that k*2^n-1, k*2^n-1+g, k*2^n-1+2*g, and k*2^n+3*g are four consecutive primes in arithmetic progression for the smallest odd k.

Table of values

n a(n)
1 135
2 -6
3 63
4 6
5 415
6 -6
7 987
8 6
9 55
10 -6
11 273
12 6
13 1195
14 -6
15 299
16 18
17 1371
18 6
19 5
20 -6
21 189
22 6
23 1077
24 6
25 7111
26 6
27 15
28 -6
29 2821
30 -18
31 15465
32 24
33 1081
34 6
35 11475
36 -6
37 17155
38 -6
39 3393
40 12
41 9751
42 6
43 16523
44 -24
45 165
46 -6
47 7395
48 -6
49 8695
50 -6
51 20325
52 -6
53 7153
54 18
55 2235
56 -6

List of values

[135, -6, 63, 6, 415, -6, 987, 6, 55, -6, 273, 6, 1195, -6, 299, 18, 1371, 6, 5, -6, 189, 6, 1077, 6, 7111, 6, 15, -6, 2821, -18, 15465, 24, 1081, 6, 11475, -6, 17155, -6, 3393, 12, 9751, 6, 16523, -24, 165, -6, 7395, -6, 8695, -6, 20325, -6, 7153, 18, 2235, -6]