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A001589 as a simple table

n a(n)
0 1
1 5
2 32
3 145
4 512
5 1649
6 5392
7 18785
8 69632
9 268705
10 1058576
11 4208945
12 16797952
13 67137425
14 268473872
15 1073792449
16 4295032832
17 17179952705
18 68719581712
19 274878037265
20 1099511787776
21 4398046705585
22 17592186278672

[1,5,32,145,512,1649,5392,18785,69632,268705,
 1058576,4208945,16797952,67137425,268473872,
 1073792449,4295032832,17179952705,68719581712,
 274878037265,1099511787776,4398046705585,
 17592186278672]

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Last modified October 21 11:24 EDT 2019. Contains 328294 sequences. (Running on oeis4.)