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A262387 as a simple table

n a(n)
1 1
2 120
3 1008
4 28800
5 49896
6 101088000
7 5702400
8 12350257920000
9 43480172736000
10 7075668600000
11 206069667148800
12 5919216795588096000
13 581222138112000
14 8460252005694128640000
15 18991807088644406016000
16 1150594272774401495040000
17 33940540399314092544000
18 9737059611553100811150566400000
19 1290633707289706940160000
20 1263402804161736165764268432000000 

[1,120,1008,28800,49896,101088000,5702400,
 12350257920000,43480172736000,7075668600000,
 206069667148800,5919216795588096000,
 581222138112000,8460252005694128640000,
 18991807088644406016000,1150594272774401495040000,
 33940540399314092544000,
 9737059611553100811150566400000,
 1290633707289706940160000,
 1263402804161736165764268432000000]

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Last modified April 24 20:06 EDT 2024. Contains 371963 sequences. (Running on oeis4.)