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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 September 21 19:26 EDT 2024. Contains 376089 sequences. (Running on oeis4.)
