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A246611 as a simple table

n a(n)
0 1
1 0
2 0
3 0
4 6
5 120
6 2160
7 41160
8 866460
9 20294064
10 526680000
11 15036999120
12 468848156040
13 15859299473160
14 578619457031616
15 22654279249875000
16 947570269816868880
17 42174922731482980320
18 1990416896317283627520
19 99290011292792071612704
20 5220362654145754082460000

[1,0,0,0,6,120,2160,41160,866460,20294064,
 526680000,15036999120,468848156040,15859299473160,
 578619457031616,22654279249875000,
 947570269816868880,42174922731482980320,
 1990416896317283627520,99290011292792071612704,
 5220362654145754082460000]

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Last modified May 13 23:15 EDT 2024. Contains 372524 sequences. (Running on oeis4.)