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A318694 as a simple table

n a(n)
0 1
1 1
2 2
3 10
4 40
5 248
6 1868
7 14516
8 131920
9 1409040
10 15697872
11 191687472
12 2663239104
13 37878672960
14 582357866400
15 9898540886880
16 172534018584960
17 3192686545714560
18 63844374067107840
19 1309775114921541120
20 28512040933544970240
21 656888836504576112640
22 15495311684125737031680

[1,1,2,10,40,248,1868,14516,131920,1409040,
 15697872,191687472,2663239104,37878672960,
 582357866400,9898540886880,172534018584960,
 3192686545714560,63844374067107840,
 1309775114921541120,28512040933544970240,
 656888836504576112640,15495311684125737031680]

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Last modified April 23 14:15 EDT 2024. Contains 371914 sequences. (Running on oeis4.)