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A137554 as a simple table

n a(n)
1 1
2 2
3 5
4 14
5 43
6 147
7 575
8 2648
9 14617
10 96696
11 754585
12 6794015
13 69116493
14 781266266
15 9688636317
16 130551322618
17 1897079161639
18 29549030800315
19 490880073850267
20 8660360684895644
21 161671375033644161
22 3183279386216962364

[1,2,5,14,43,147,575,2648,14617,96696,754585,
 6794015,69116493,781266266,9688636317,
 130551322618,1897079161639,29549030800315,
 490880073850267,8660360684895644,
 161671375033644161,3183279386216962364]

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Last modified July 2 16:04 EDT 2022. Contains 355029 sequences. (Running on oeis4.)