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A238085 as a simple table

n a(n)
0 0
1 1
2 2
3 10
4 72
5 716
6 9088
7 140344
8 2554240
9 53540368
10 1270296064
11 33653698464
12 984753299456
13 31542901202112
14 1097763264864256
15 41247391653500800
16 1664188908529156096
17 71759140177774010624
18 3293251384307726942208
19 160272893566770148403712

[0,1,2,10,72,716,9088,140344,2554240,53540368,
 1270296064,33653698464,984753299456,
 31542901202112,1097763264864256,41247391653500800,
 1664188908529156096,71759140177774010624,
 3293251384307726942208,160272893566770148403712]

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Last modified July 22 20:51 EDT 2019. Contains 325226 sequences. (Running on oeis4.)