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A054646 as a simple table

n a(n)
1 1
2 3
3 21
4 75
5 151
6 1365
7 5461
8 14563
9 87381
10 184111
11 932067
12 5592405
13 13256071
14 26512143
15 357913941
16 1431655765
17 3817748707
18 22906492245
19 91625968981
20 244335917283
21 1466015503701
22 5212499568715
23 10424999137431

[1,3,21,75,151,1365,5461,14563,87381,184111,
 932067,5592405,13256071,26512143,357913941,
 1431655765,3817748707,22906492245,91625968981,
 244335917283,1466015503701,5212499568715,
 10424999137431]

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Last modified June 14 05:10 EDT 2021. Contains 345018 sequences. (Running on oeis4.)