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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.

A103195 Concatenations of pairs of primes that differ by four.

Table of values

n a(n)
1 37
2 711
3 1317
4 1923
5 3741
6 4347
7 6771
8 7983
9 97101
10 103107
11 109113
12 127131
13 163167
14 193197
15 223227
16 229233
17 277281
18 307311
19 313317
20 349353
21 379383
22 397401
23 439443
24 457461
25 463467
26 487491
27 499503
28 613617
29 643647
30 673677
31 739743
32 757761
33 769773

List of values

[37, 711, 1317, 1923, 3741, 4347, 6771, 7983, 97101, 103107, 109113, 127131, 163167, 193197, 223227, 229233, 277281, 307311, 313317, 349353, 379383, 397401, 439443, 457461, 463467, 487491, 499503, 613617, 643647, 673677, 739743, 757761, 769773]

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

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