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A012952 as a simple table

n a(n)
0 1
1 -4
2 -8
3 26
4 4008
5 288486
6 23670420
7 2395713498
8 304636017840
9 49472656345230
10 10516377983584300
11 2991272711709675554
12 1135988864475032518984
13 557539993775779096522774

[1,-4,-8,26,4008,288486,23670420,2395713498,
 304636017840,49472656345230,10516377983584300,
 2991272711709675554,1135988864475032518984,
 557539993775779096522774]

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Last modified February 25 21:46 EST 2020. Contains 332258 sequences. (Running on oeis4.)