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A213243 as a simple table

n a(n)
1 1
2 1
3 7
4 5
5 31
6 21
7 127
8 85
9 511
10 341
11 2047
12 1365
13 8191
14 5461
15 32767
16 21845
17 131071
18 87381
19 524287
20 349525
21 2097151
22 1398101
23 8388607
24 5592405
25 33554431
26 22369621
27 134217727
28 89478485
29 536870911
30 357913941
31 2147483647
32 1431655765
33 8589934591
34 5726623061
35 34359738367
36 22906492245

[1,1,7,5,31,21,127,85,511,341,2047,1365,8191,5461,
 32767,21845,131071,87381,524287,349525,2097151,
 1398101,8388607,5592405,33554431,22369621,
 134217727,89478485,536870911,357913941,2147483647,
 1431655765,8589934591,5726623061,34359738367,
 22906492245]

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Last modified March 28 17:25 EDT 2024. Contains 371254 sequences. (Running on oeis4.)