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A222397 as a simple table

n a(n)
1 0
2 0
3 4
4 35
5 0
6 624
7 900
8 21634
9 21224
10 609872
11 756664
12 18326048
13 23970800
14 543783008
15 781519168
16 16285754632
17 25251222240
18 489217824832
19 816430181216
20 14763821943024
21 26347993000448
22 447331602311680
23 849299259827904

[0,0,4,35,0,624,900,21634,21224,609872,756664,
 18326048,23970800,543783008,781519168,16285754632,
 25251222240,489217824832,816430181216,
 14763821943024,26347993000448,447331602311680,
 849299259827904]

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Last modified June 12 09:45 EDT 2024. Contains 373329 sequences. (Running on oeis4.)