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A147885 as a simple table

n a(n)
1 1
2 2
3 6
4 16
5 74
6 368
7 2016
8 12168
9 85462
10 646544
11 5510236
12 49722456
13 500178548
14 5288883744
15 60900708056
16 733070993472

[1,2,6,16,74,368,2016,12168,85462,646544,5510236,
 49722456,500178548,5288883744,60900708056,
 733070993472]

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Last modified January 25 19:00 EST 2022. Contains 350572 sequences. (Running on oeis4.)