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A200560 as a simple table

n a(n)
1 1
2 2
3 6
4 28
5 180
6 1502
7 15456
8 189208
9 2683920
10 43263962
11 780807456
12 15593180788
13 341340941760
14 8126644655222
15 209050212857856
16 5777935570510768
17 170755837008595200
18 5373097909706399282
19 179351443518333574656
20 6329687401322560131148
21 235491796312126982538240

[1,2,6,28,180,1502,15456,189208,2683920,43263962,
 780807456,15593180788,341340941760,8126644655222,
 209050212857856,5777935570510768,
 170755837008595200,5373097909706399282,
 179351443518333574656,6329687401322560131148,
 235491796312126982538240]

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Last modified April 19 09:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)