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A035088 as a simple table

n a(n)
0 1
1 1
2 0
3 1
4 3
5 27
6 240
7 2985
8 42840
9 731745
10 14243040
11 313570845
12 7683984000
13 207685374435
14 6135743053440
15 196754537704725
16 6805907485977600
17 252620143716765825
18 10015402456976716800
19 422410127508300756825
20 18884777200534941696000

[1,1,0,1,3,27,240,2985,42840,731745,14243040,
 313570845,7683984000,207685374435,6135743053440,
 196754537704725,6805907485977600,
 252620143716765825,10015402456976716800,
 422410127508300756825,18884777200534941696000]

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Last modified October 23 06:57 EDT 2019. Contains 328335 sequences. (Running on oeis4.)