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A289403 as a simple table

n a(n)
0 1
1 1
2 3
3 15
4 15
5 47
6 127
7 255
8 127
9 1023
10 1919
11 3583
12 8191
13 8191
14 24575
15 30719
16 57343
17 262143
18 129023
19 917503
20 2064383
21 2064383
22 6242303
23 13500415
24 31981567
25 66977791
26 133496831
27 266338303
28 415236095
29 1063780351
30 1052770303
31 4294967295
32 8589934591

[1,1,3,15,15,47,127,255,127,1023,1919,3583,8191,
 8191,24575,30719,57343,262143,129023,917503,
 2064383,2064383,6242303,13500415,31981567,
 66977791,133496831,266338303,415236095,1063780351,
 1052770303,4294967295,8589934591]

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Last modified August 30 12:13 EDT 2024. Contains 375543 sequences. (Running on oeis4.)