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A156415 as a simple table

n a(n)
0 1
1 120
2 0
3 0
4 14564760
5 66083040
6 0
7 0
8 2511725250
9 3360660500
10 0
11 0
12 105602337600
13 192407274081
14 0
15 0
16 1556654915420
17 1665635124840
18 0
19 0 

[1,120,0,0,14564760,66083040,0,0,2511725250,
 3360660500,0,0,105602337600,192407274081,0,0,
 1556654915420,1665635124840,0,0]

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Last modified April 24 00:30 EDT 2024. Contains 371917 sequences. (Running on oeis4.)