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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.

A332215 Mersenne-prime fixing variant of A243071: a(n) = A243071(A332213(n)).

Table of values

n a(n)
1 0
2 1
3 3
4 2
5 15
6 6
7 7
8 4
9 5
10 30
11 63
12 12
13 255
14 14
15 29
16 8
17 511
18 10
19 1023
20 60
21 13
22 126
23 2047
24 24
25 23
26 510
27 9
28 28
29 4095
30 58
31 31
32 16
33 125
34 1022
35 27
36 20
37 16383
38 2046
39 509
40 120
41 32767
42 26
43 65535
44 252
45 57
46 4094
47 262143
48 48
49 11
50 46
51 1021
52 1020
53 1048575
54 18
55 119
56 56
57 2045
58 8190
59 2097151
60 116
61 4194303
62 62
63 25
64 32
65 503
66 250
67 8388607
68 2044
69 4093
70 54
71 16777215
72 40

List of values

[0, 1, 3, 2, 15, 6, 7, 4, 5, 30, 63, 12, 255, 14, 29, 8, 511, 10, 1023, 60, 13, 126, 2047, 24, 23, 510, 9, 28, 4095, 58, 31, 16, 125, 1022, 27, 20, 16383, 2046, 509, 120, 32767, 26, 65535, 252, 57, 4094, 262143, 48, 11, 46, 1021, 1020, 1048575, 18, 119, 56, 2045, 8190, 2097151, 116, 4194303, 62, 25, 32, 503, 250, 8388607, 2044, 4093, 54, 16777215, 40]

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