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A139315 as a simple table

n a(n)
2 1
3 2
4 6
5 12
6 60
7 120
8 1260
9 840
10 0
11 2520
12 27720
13 55440
14 0
15 720720
16 1081080
17 2162160
18 61261200
19 36756720
20 1396755360
21 2327925600
22 0
23 698377680
24 16062686640
25 48188059920
26 0
27 749592043200
28 160626866400
29 240940299600
30 0
31 6987268688400

[1,2,6,12,60,120,1260,840,0,2520,27720,55440,0,
 720720,1081080,2162160,61261200,36756720,
 1396755360,2327925600,0,698377680,16062686640,
 48188059920,0,749592043200,160626866400,
 240940299600,0,6987268688400]

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Last modified May 16 08:41 EDT 2024. Contains 372552 sequences. (Running on oeis4.)