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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.

A121820 Numbers m such that greatest prime divisor of (m-th prime + 1) is 3.

Table of values

n a(n)
1 1
2 3
3 5
4 7
5 9
6 15
7 16
8 20
9 28
10 43
11 76
12 83
13 118
14 150
15 164
16 190
17 377
18 597
19 801
20 889
21 1091
22 1561
23 1814
24 2601
25 3016
26 6253
27 7281
28 13005
29 15167
30 25607
31 27191
32 37126
33 39419
34 41357
35 62946
36 78155
37 83024
38 184383
39 702826
40 1146234
41 1203569
42 1595690
43 1871469

List of values

[1, 3, 5, 7, 9, 15, 16, 20, 28, 43, 76, 83, 118, 150, 164, 190, 377, 597, 801, 889, 1091, 1561, 1814, 2601, 3016, 6253, 7281, 13005, 15167, 25607, 27191, 37126, 39419, 41357, 62946, 78155, 83024, 184383, 702826, 1146234, 1203569, 1595690, 1871469]

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

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