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A061712 as a simple table

n a(n)
1 2
2 3
3 7
4 23
5 31
6 311
7 127
8 383
9 991
10 2039
11 3583
12 6143
13 8191
14 73727
15 63487
16 129023
17 131071
18 522239
19 524287
20 1966079
21 4128767
22 16250879
23 14680063
24 33546239
25 67108351
26 201064447
27 260046847
28 536739839
29 1073479679
30 5335154687
31 2147483647

[2,3,7,23,31,311,127,383,991,2039,3583,6143,8191,
 73727,63487,129023,131071,522239,524287,1966079,
 4128767,16250879,14680063,33546239,67108351,
 201064447,260046847,536739839,1073479679,
 5335154687,2147483647]

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Last modified April 19 11:13 EDT 2019. Contains 322263 sequences. (Running on oeis4.)