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A157503 as a simple table

n a(n)
0 1
1 -1
2 -4
3 -21
4 -160
5 -1505
6 -17136
7 -226093
8 -3334528
9 -53031105
10 -864640000
11 -12957006821
12 -107329453056
13 4548002439071
14 409321789829120
15 23780752998703875
16 1257249577352658944
17 65336038911885770623

[1,-1,-4,-21,-160,-1505,-17136,-226093,-3334528,
 -53031105,-864640000,-12957006821,-107329453056,
 4548002439071,409321789829120,23780752998703875,
 1257249577352658944,65336038911885770623]

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Last modified May 16 17:27 EDT 2024. Contains 372554 sequences. (Running on oeis4.)