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A003531 as a simple table

n a(n)
1 1
2 3
3 23
4 69
5 89
6 267
7 683
8 2047
9 2049
10 6141
11 15709
12 47127
13 60787
14 182361
15 1398101
16 4194303

[1,3,23,69,89,267,683,2047,2049,6141,15709,47127,
 60787,182361,1398101,4194303]

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Last modified April 25 11:03 EDT 2024. Contains 371967 sequences. (Running on oeis4.)