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A012994 as a simple table

n a(n)
0 1
1 4
2 8
3 310
4 4600
5 695450
6 32209900
7 9441571750
8 1024927826000
9 439344864507250
10 96071120715212500
11 52160549887581638750
12 20873814687864446035000
13 13171711293701017616406250

[1,4,8,310,4600,695450,32209900,9441571750,
 1024927826000,439344864507250,96071120715212500,
 52160549887581638750,20873814687864446035000,
 13171711293701017616406250]

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Last modified November 13 17:34 EST 2019. Contains 329106 sequences. (Running on oeis4.)