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A030128 as a simple table

n a(n)
1 1
2 0
3 1
4 0
5 0
6 0
7 30
8 0
9 840
10 0
11 0
12 0
13 1197504000
14 0
15 60281712691200
16 0
17 0
18 0
19 1348410350618155344199680000

[1,0,1,0,0,0,30,0,840,0,0,0,1197504000,0,
 60281712691200,0,0,0,1348410350618155344199680000]

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Last modified June 14 03:38 EDT 2021. Contains 345018 sequences. (Running on oeis4.)