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A222320 as a simple table

n a(n)
1 1
2 2
3 4
4 8
5 20
6 52
7 146
8 430
9 1306
10 4176
11 13832
12 47452
13 169044
14 619672
15 234225 

[1,2,4,8,20,52,146,430,1306,4176,13832,47452,
 169044,619672,234225]

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Last modified April 24 10:00 EDT 2024. Contains 371935 sequences. (Running on oeis4.)