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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.

A288340 a(n) is the smallest prime that is the sum of both 2n-1 and 2n+1 consecutive primes.

Table of values

n a(n)
1 23
2 83
3 311
4 401
5 1367
6 3617
7 863
8 5683
9 1523
10 153113
11 90011
12 10949
13 7901
14 155671
15 11131
16 117977
17 14699
18 252079
19 58369
20 132749
21 203293
22 641867
23 116257
24 607093
25 78791
26 46471
27 927049
28 340601
29 1485541
30 521897
31 99149
32 771889
33 2153993
34 227869
35 2349251
36 4762213
37 56099
38 3232093
39 944003
40 1006781

List of values

[23, 83, 311, 401, 1367, 3617, 863, 5683, 1523, 153113, 90011, 10949, 7901, 155671, 11131, 117977, 14699, 252079, 58369, 132749, 203293, 641867, 116257, 607093, 78791, 46471, 927049, 340601, 1485541, 521897, 99149, 771889, 2153993, 227869, 2349251, 4762213, 56099, 3232093, 944003, 1006781]

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

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