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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.

A053648 Scan decimal expansion of Mersenne primes (A000668), recording all primes seen.

Table of values

n a(n)
1 3
2 7
3 31
4 2
5 127
6 19
7 191
8 8191
9 13
10 71
11 107
12 131
13 131071
14 5
15 524287
16 47
17 83
18 647
19 2147483647
20 23
21 43
22 5843
23 13693
24 4300921
25 5843009
26 584300921
27 2305843009
28 5843009213
29 30584300921
30 43009213693
31 2305843009213693951
32 11
33 37
34 61
35 89
36 97
37 137
38 211
39 269
40 449
41 2111

List of values

[3, 7, 31, 2, 127, 19, 191, 8191, 13, 71, 107, 131, 131071, 5, 524287, 47, 83, 647, 2147483647, 23, 43, 5843, 13693, 4300921, 5843009, 584300921, 2305843009, 5843009213, 30584300921, 43009213693, 2305843009213693951, 11, 37, 61, 89, 97, 137, 211, 269, 449, 2111]

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

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