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A012318 as a simple table

n a(n)
0 0
1 1
2 2
3 6
4 32
5 240
6 2000
7 19656
8 221888
9 2846784
10 40430848
11 632914304
12 10802538496
13 199980939392
14 3985563555584
15 85138224664832
16 1939700554334208
17 46962544699670528
18 1203843275552612352

[0,1,2,6,32,240,2000,19656,221888,2846784,
 40430848,632914304,10802538496,199980939392,
 3985563555584,85138224664832,1939700554334208,
 46962544699670528,1203843275552612352]

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Last modified March 29 03:51 EDT 2024. Contains 371264 sequences. (Running on oeis4.)