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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.

A268068 First occurrence of n in the decimal expansion of Mersenne prime 2^74207281 - 1.

Table of values

n a(n)
0 2
1 8
2 18
3 1
4 7
5 20
6 6
7 5
8 9
9 22
10 167
11 240
12 196
13 156
14 51
15 143
16 31
17 241
18 8
19 74
20 18
21 73
22 138
23 71
24 154
25 217
26 96
27 119
28 160
29 21
30 1
31 166
32 72
33 63
34 64
35 28
36 87
37 4
38 172
39 57
40 210
41 7
42 81
43 56
44 103
45 65
46 12
47 68
48 52
49 374
50 35
51 239
52 20
53 90
54 67
55 66
56 38
57 178
58 42
59 29
60 13
61 15
62 174
63 44
64 6

List of values

[2, 8, 18, 1, 7, 20, 6, 5, 9, 22, 167, 240, 196, 156, 51, 143, 31, 241, 8, 74, 18, 73, 138, 71, 154, 217, 96, 119, 160, 21, 1, 166, 72, 63, 64, 28, 87, 4, 172, 57, 210, 7, 81, 56, 103, 65, 12, 68, 52, 374, 35, 239, 20, 90, 67, 66, 38, 178, 42, 29, 13, 15, 174, 44, 6]

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