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A338197 as a simple table

n a(n)
1 1
2 2
3 4
4 8
5 20
6 44
7 114
8 312
9 894
10 2639
11 8005
12 24362
13 74918
14 231123
15 722388
16 2276599
17 7242497
18 23144119

[1,2,4,8,20,44,114,312,894,2639,8005,24362,74918,
 231123,722388,2276599,7242497,23144119]

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Last modified July 29 15:22 EDT 2021. Contains 346346 sequences. (Running on oeis4.)