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A059990 as a simple table

n a(n)
1 1
2 1
3 7
4 5
5 31
6 7
7 127
8 85
9 511
10 341
11 2047
12 455
13 8191
14 5461
15 32767
16 21845
17 131071
18 9709
19 524287
20 349525
21 2097151
22 1398101
23 8388607
24 1864135
25 33554431
26 22369621
27 134217727
28 89478485
29 536870911
30 119304647

[1,1,7,5,31,7,127,85,511,341,2047,455,8191,5461,
 32767,21845,131071,9709,524287,349525,2097151,
 1398101,8388607,1864135,33554431,22369621,
 134217727,89478485,536870911,119304647]

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Last modified May 5 05:35 EDT 2024. Contains 372257 sequences. (Running on oeis4.)