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A108508 as a simple table

n a(n)
1 1
2 4
3 12
4 48
5 180
6 528
7 1392
8 3600
9 7920
10 13680
11 21840
12 31872
13 25008

[1,4,12,48,180,528,1392,3600,7920,13680,21840,
 31872,25008]

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Last modified March 2 10:40 EST 2024. Contains 370466 sequences. (Running on oeis4.)