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A291110 as a simple table

n a(n)
0 0
1 0
2 0
3 0
4 6
5 150
6 3240
7 71610
8 1692180
9 43296120
10 1202014800
11 36144686160
12 1173334341960
13 40964232699390
14 1532291272031520
15 61185138170697450
16 2599160146594218480
17 117091760635760465520
18 5577733223175044859840
19 280195572152151651031200

[0,0,0,0,6,150,3240,71610,1692180,43296120,
 1202014800,36144686160,1173334341960,
 40964232699390,1532291272031520,61185138170697450,
 2599160146594218480,117091760635760465520,
 5577733223175044859840,280195572152151651031200]

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Last modified March 28 10:55 EDT 2024. Contains 371241 sequences. (Running on oeis4.)