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A244855 as a simple table

n a(n)
1 0
2 0
3 15
4 80
5 624
6 4095
7 28560
8 194480
9 1336335
10 9150624
11 62742240
12 429981695
13 2947295520
14 20200652640
15 138458409999
16 949005240560
17 6504586067280
18 44583076827135
19 305577005139120
20 2094455819300624
21 14355614096087055
22 98394841894789440
23 674408281676875200

[0,0,15,80,624,4095,28560,194480,1336335,9150624,
 62742240,429981695,2947295520,20200652640,
 138458409999,949005240560,6504586067280,
 44583076827135,305577005139120,2094455819300624,
 14355614096087055,98394841894789440,
 674408281676875200]

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Last modified May 10 21:08 EDT 2021. Contains 343780 sequences. (Running on oeis4.)