cp's OEIS Frontend

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.

A306719 Lexicographically earliest sequence containing 2 and all positive integers n such that the prime indices of n - 1 already belong to the sequence.

Table of values

n a(n)
1 2
2 4
3 8
4 10
5 20
6 22
7 28
8 30
9 50
10 58
11 64
12 72
13 80
14 82
15 88
16 108
17 114
18 134
19 148
20 172
21 190
22 204
23 214
24 230
25 238
26 244
27 262
28 272
29 312
30 322
31 340
32 344
33 360
34 362
35 400
36 410
37 422
38 442
39 458
40 498
41 514
42 552
43 554
44 568
45 594
46 610
47 620
48 640
49 688
50 712
51 730
52 750
53 758
54 784
55 792
56 814

List of values

[2, 4, 8, 10, 20, 22, 28, 30, 50, 58, 64, 72, 80, 82, 88, 108, 114, 134, 148, 172, 190, 204, 214, 230, 238, 244, 262, 272, 312, 322, 340, 344, 360, 362, 400, 410, 422, 442, 458, 498, 514, 552, 554, 568, 594, 610, 620, 640, 688, 712, 730, 750, 758, 784, 792, 814]

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

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