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A009604 as a simple table

n a(n)
0 1
1 0
2 12
3 280
4 11536
5 703296
6 59653440
7 6715007104
8 967972497664
9 173764741920768
10 37986612815698944
11 9929613975171315712
12 3056815269626584895488
13 1094148286150918628229120

[1,0,12,280,11536,703296,59653440,6715007104,
 967972497664,173764741920768,37986612815698944,
 9929613975171315712,3056815269626584895488,
 1094148286150918628229120]

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Last modified October 4 03:29 EDT 2022. Contains 357237 sequences. (Running on oeis4.)