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A147940 as a simple table

n a(n)
1 1
2 2
3 6
4 16
5 54
6 232
7 936
8 5070
9 25700
10 144538
11 829398
12 4949114
13 30028194
14 195791072
15 1612860652
16 13023036794 

[1,2,6,16,54,232,936,5070,25700,144538,829398,
 4949114,30028194,195791072,1612860652,13023036794]

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Last modified May 6 02:22 EDT 2024. Contains 372290 sequences. (Running on oeis4.)