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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.

A220143 Numbers n that yield a new record for k such that n*k+1 and n*k-1 are twin primes.

Table of values

n a(n)
1 1
2 5
3 8
4 11
5 13
6 31
7 37
8 53
9 61
10 433
11 1957
12 2047
13 2603
14 4079
15 9967
16 10789
17 76943
18 81439
19 121763
20 206867
21 233969
22 276349
23 495931
24 626939
25 2055943
26 3144937
27 3585509
28 3810949
29 6274823
30 8407129
31 9299471
32 19279903
33 35531621
34 36426301
35 38235389
36 71701529
37 76384717
38 98566373

List of values

[1, 5, 8, 11, 13, 31, 37, 53, 61, 433, 1957, 2047, 2603, 4079, 9967, 10789, 76943, 81439, 121763, 206867, 233969, 276349, 495931, 626939, 2055943, 3144937, 3585509, 3810949, 6274823, 8407129, 9299471, 19279903, 35531621, 36426301, 38235389, 71701529, 76384717, 98566373]

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

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