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A090137 as a simple table

n a(n)
1 0
2 0
3 1
4 1
5 11
6 13
7 19
8 1
9 247
10 251
11 1013
12 509
13 1361
14 1363
15 16369
16 2047
17 65519
18 851
19 233
20 14563
21 209711
22 29959
23 46091
24 1048573
25 5592397
26 5592401
27 67108837
28 1342177
29 20648879
30 268435441
31 357913931
32 22369621
33 4294967263
34 4294967279

[0,0,1,1,11,13,19,1,247,251,1013,509,1361,1363,
 16369,2047,65519,851,233,14563,209711,29959,46091,
 1048573,5592397,5592401,67108837,1342177,20648879,
 268435441,357913931,22369621,4294967263,
 4294967279]

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Last modified January 26 20:33 EST 2020. Contains 331288 sequences. (Running on oeis4.)