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A052955 as a simple table

n a(n)
0 1
1 2
2 3
3 5
4 7
5 11
6 15
7 23
8 31
9 47
10 63
11 95
12 127
13 191
14 255
15 383
16 511
17 767
18 1023
19 1535
20 2047
21 3071
22 4095
23 6143
24 8191
25 12287
26 16383
27 24575
28 32767
29 49151
30 65535
31 98303
32 131071
33 196607
34 262143
35 393215
36 524287
37 786431
38 1048575
39 1572863
40 2097151
41 3145727

[1,2,3,5,7,11,15,23,31,47,63,95,127,191,255,383,
 511,767,1023,1535,2047,3071,4095,6143,8191,12287,
 16383,24575,32767,49151,65535,98303,131071,196607,
 262143,393215,524287,786431,1048575,1572863,
 2097151,3145727]

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Last modified April 23 14:32 EDT 2024. Contains 371914 sequences. (Running on oeis4.)