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A338562 as a simple table

n a(n)
0 1
1 0
2 240
3 20160
4 0
5 319334400
6 62270208000
7 0
8 4979623993344000
9 1946321606541312000
10 0
11 517040334777699532800000
12 155112100433309859840000000
13 0
14 229885811837232250818134016000000
15 230239482316981838896315760640000000
16 0
17 82665183731089159437333210700185600000000

[1,0,240,20160,0,319334400,62270208000,0,
 4979623993344000,1946321606541312000,0,
 517040334777699532800000,
 155112100433309859840000000,0,
 229885811837232250818134016000000,
 230239482316981838896315760640000000,0,
 82665183731089159437333210700185600000000]

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Last modified July 16 03:21 EDT 2024. Contains 374343 sequences. (Running on oeis4.)