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A147916 as a simple table

n a(n)
1 1
2 2
3 6
4 16
5 54
6 232
7 936
8 3880
9 23002
10 127008
11 720116
12 4318818
13 26024362
14 158973744
15 1022131470
16 6808137758 

[1,2,6,16,54,232,936,3880,23002,127008,720116,
 4318818,26024362,158973744,1022131470,6808137758]

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Last modified May 18 10:28 EDT 2022. Contains 353807 sequences. (Running on oeis4.)