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A056466 as a simple table

n a(n)
1 0
2 0
3 0
4 0
5 0
6 0
7 0
8 0
9 120
10 120
11 1800
12 1800
13 16800
14 16800
15 126000
16 126000
17 834120
18 834000
19 5103000
20 5102880
21 29607600
22 29605800
23 165528000
24 165526200
25 901020120
26 901003320
27 4809004080
28 4808987400
29 25292030400
30 25291904280
31 131542866000
32 131542740000

[0,0,0,0,0,0,0,0,120,120,1800,1800,16800,16800,
 126000,126000,834120,834000,5103000,5102880,
 29607600,29605800,165528000,165526200,901020120,
 901003320,4809004080,4808987400,25292030400,
 25291904280,131542866000,131542740000]

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Last modified March 28 12:59 EDT 2024. Contains 371254 sequences. (Running on oeis4.)