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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.

A147993 Sequence S such that 1 is in S and if x is in S, then 6x-1 and 6x+1 are in S.

Table of values

n a(n)
1 1
2 5
3 7
4 29
5 31
6 41
7 43
8 173
9 175
10 185
11 187
12 245
13 247
14 257
15 259
16 1037
17 1039
18 1049
19 1051
20 1109
21 1111
22 1121
23 1123
24 1469
25 1471
26 1481
27 1483
28 1541
29 1543
30 1553
31 1555
32 6221
33 6223
34 6233
35 6235
36 6293
37 6295
38 6305
39 6307
40 6653
41 6655
42 6665
43 6667
44 6725
45 6727
46 6737
47 6739

List of values

[1, 5, 7, 29, 31, 41, 43, 173, 175, 185, 187, 245, 247, 257, 259, 1037, 1039, 1049, 1051, 1109, 1111, 1121, 1123, 1469, 1471, 1481, 1483, 1541, 1543, 1553, 1555, 6221, 6223, 6233, 6235, 6293, 6295, 6305, 6307, 6653, 6655, 6665, 6667, 6725, 6727, 6737, 6739]

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

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