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A012739 as a simple table

n a(n)
0 1
1 -2
2 20
3 -16
4 14096
5 887456
6 126998976
7 21834514688
8 5067177011456
9 1485621376751104
10 540527763829711872
11 238770291840873000960
12 125924968135743519723520
13 78156500138405011699867648

[1,-2,20,-16,14096,887456,126998976,21834514688,
 5067177011456,1485621376751104,540527763829711872,
 238770291840873000960,125924968135743519723520,
 78156500138405011699867648]

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Last modified March 29 09:59 EDT 2024. Contains 371268 sequences. (Running on oeis4.)