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A287022 as a simple table

n a(n)
0 1
1 1
2 1
3 1
4 1
5 1
6 1
7 1
8 180
9 11358
10 1
11 1
12 2520
13 1872000
14 1009008000
15 1
16 1
17 56712
18 189197280
19 814774020480
20 4058338214422800
21 1
22 360
23 1871640
24 34306401600
25 811667639890800
26 22208161516294279680
27 667544434159390230643200

[1,1,1,1,1,1,1,1,180,11358,1,1,2520,1872000,
 1009008000,1,1,56712,189197280,814774020480,
 4058338214422800,1,360,1871640,34306401600,
 811667639890800,22208161516294279680,
 667544434159390230643200]

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Last modified September 2 13:09 EDT 2024. Contains 375613 sequences. (Running on oeis4.)