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A124903 as a simple table

n a(n)
5 2
6 12
7 30
8 240
9 720
10 60480
11 60480
12 7983360
13 1108800
14 518918400
15 21794572800
16 62270208000
17 87178291200
18 35568742809600
19 2
20 40548366802944000
21 304112751022080000
22 851515702861824000
23 2534272925184000
24 5170403347776995328000
25 51704033477769953280000

[2,12,30,240,720,60480,60480,7983360,1108800,
 518918400,21794572800,62270208000,87178291200,
 35568742809600,2,40548366802944000,
 304112751022080000,851515702861824000,
 2534272925184000,5170403347776995328000,
 51704033477769953280000]

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Last modified June 13 17:15 EDT 2024. Contains 373391 sequences. (Running on oeis4.)