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A290624 as a simple table

n a(n)
0 1
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 9
9 9
10 9
11 9
12 9
13 9
14 11
15 11
16 43
17 43
18 43
19 43
20 59
21 59
22 59
23 447
24 1471
25 1471
26 1471
27 1535
28 7679
29 7679
30 7679
31 7679
32 65023
33 65535
34 65535
35 65535
36 65535
37 65535
38 65535
39 65535
40 65535
41 131071
42 524287
43 524287
44 2097151
45 2097151
46 2097151
47 2097151

[1,1,1,1,1,1,1,1,9,9,9,9,9,9,11,11,43,43,43,43,59,
 59,59,447,1471,1471,1471,1535,7679,7679,7679,7679,
 65023,65535,65535,65535,65535,65535,65535,65535,
 65535,131071,524287,524287,2097151,2097151,
 2097151,2097151]

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Last modified November 13 10:29 EST 2019. Contains 329093 sequences. (Running on oeis4.)