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A159504 as a simple table

n a(n)
0 1
1 20
2 62
3 -12280
4 -308468
5 10433200
6 729974920
7 -6559031200
8 -1858301284720
9 -19430405329600
10 5264344401526240
11 170961658044572800
12 -16153599323983104320
13 -1016492471508449363200
14 50649065999412773118080
15 5823023695166237849024000
16 -140330290713698002728185600

[1,20,62,-12280,-308468,10433200,729974920,
 -6559031200,-1858301284720,-19430405329600,
 5264344401526240,170961658044572800,
 -16153599323983104320,-1016492471508449363200,
 50649065999412773118080,5823023695166237849024000,
 -140330290713698002728185600]

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Last modified July 20 17:50 EDT 2018. Contains 312817 sequences. (Running on oeis4.)