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A131705 as a simple table

n a(n)
0 0
1 1
2 16
3 144
4 1536
5 7200
6 51840
7 282240
8 1474560
9 7464960
10 55296000
11 200724480
12 1051066368
13 6167715840
14 21459271680
15 114960384000
16 523197480960
17 2214903398400
18 9311791104000
19 41500698624000
20 183936614400000

[0,1,16,144,1536,7200,51840,282240,1474560,
 7464960,55296000,200724480,1051066368,6167715840,
 21459271680,114960384000,523197480960,
 2214903398400,9311791104000,41500698624000,
 183936614400000]

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Last modified May 20 04:41 EDT 2022. Contains 353851 sequences. (Running on oeis4.)