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A201740 as a simple table

n a(n)
1 1
2 -1
3 -1
4 -1
5 4
6 39
7 -158
8 211
9 -186
10 -33722
11 55130
12 192039
13 -4032991

[1,-1,-1,-1,4,39,-158,211,-186,-33722,55130,
 192039,-4032991]

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Last modified August 29 15:03 EDT 2024. Contains 375517 sequences. (Running on oeis4.)