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A325018 as a simple table

n a(n)
1 0
2 1
3 0
4 0
5 3
6 3
7 0
8 1
9 63
10 662
11 2400
12 3900
13 2940
14 840
15 0
16 94
17 97692
18 10308758
19 337560150
20 5098740090
21 42976836210
22 224685801060
23 775389028050
24 1830791421900
25 3007909258200
26 3439214024400
27 2685727044000
28 1366701336000
29 408648240000
30 54486432000

[0,1,0,0,3,3,0,1,63,662,2400,3900,2940,840,0,94,
 97692,10308758,337560150,5098740090,42976836210,
 224685801060,775389028050,1830791421900,
 3007909258200,3439214024400,2685727044000,
 1366701336000,408648240000,54486432000]

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Last modified March 28 22:04 EDT 2024. Contains 371254 sequences. (Running on oeis4.)