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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.

A106066 Primes p such that 1*p+20 and 20*p+1 are primes.

Table of values

n a(n)
1 3
2 23
3 41
4 47
5 53
6 59
7 107
8 131
9 137
10 173
11 179
12 191
13 251
14 263
15 293
16 311
17 443
18 467
19 503
20 599
21 641
22 971
23 977
24 1013
25 1049
26 1151
27 1277
28 1301
29 1307
30 1409
31 1427
32 1433
33 1451
34 1559
35 1607
36 1721
37 1913
38 1973
39 1979
40 2069
41 2111
42 2141
43 2267
44 2417
45 2693
46 2729
47 2777
48 2999

List of values

[3, 23, 41, 47, 53, 59, 107, 131, 137, 173, 179, 191, 251, 263, 293, 311, 443, 467, 503, 599, 641, 971, 977, 1013, 1049, 1151, 1277, 1301, 1307, 1409, 1427, 1433, 1451, 1559, 1607, 1721, 1913, 1973, 1979, 2069, 2111, 2141, 2267, 2417, 2693, 2729, 2777, 2999]

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

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