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A211997 as a simple table

n a(n)
1 2
2 3
3 7
4 23
5 31
6 127
7 127
8 383
9 991
10 2039
11 3583
12 6143
13 8191
14 63487
15 63487
16 129023
17 131071
18 522239
19 524287
20 1966079
21 4128767
22 14680063
23 14680063
24 33546239
25 67108351
26 201064447
27 260046847
28 536739839
29 1073479679
30 2147483647
31 2147483647
32 8581545983
33 16911433727
34 32212254719

[2,3,7,23,31,127,127,383,991,2039,3583,6143,8191,
 63487,63487,129023,131071,522239,524287,1966079,
 4128767,14680063,14680063,33546239,67108351,
 201064447,260046847,536739839,1073479679,
 2147483647,2147483647,8581545983,16911433727,
 32212254719]

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Last modified March 28 14:38 EDT 2024. Contains 371254 sequences. (Running on oeis4.)