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A147727 as a simple table

n a(n)
1 1
2 2
3 6
4 16
5 54
6 232
7 936
8 3880
9 17302
10 81584
11 409012
12 2169742
13 11998726
14 69653068
15 426511054
16 2718410098
17 18114464012

[1,2,6,16,54,232,936,3880,17302,81584,409012,
 2169742,11998726,69653068,426511054,2718410098,
 18114464012]

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Last modified January 23 16:29 EST 2022. Contains 350514 sequences. (Running on oeis4.)