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A074359 as a simple table

n a(n)
0 0
1 0
2 0
3 0
4 12
5 64
6 280
7 1088
8 3968
9 13856
10 46912
11 155136
12 503616
13 1610496
14 5086336
15 15895552
16 49229312
17 151275008
18 461662208
19 1400356864
20 4224703488
21 12683452416
22 37911164928
23 112865394688
24 334788444160
25 989756825600

[0,0,0,0,12,64,280,1088,3968,13856,46912,155136,
 503616,1610496,5086336,15895552,49229312,
 151275008,461662208,1400356864,4224703488,
 12683452416,37911164928,112865394688,334788444160,
 989756825600]

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Last modified April 10 16:21 EDT 2024. Contains 371607 sequences. (Running on oeis4.)