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A294461 as a simple table

n a(n)
0 1
1 -1
2 -1
3 -55
4 217
5 -2441
6 41911
7 -343519
8 10531025
9 -123024817
10 2722259791
11 -64395229031
12 1218005521129
13 -36874422541945
14 785879799954887
15 -25331247487596751
16 708096286059632161
17 -21422225147712360929
18 741754828422824400415

[1,-1,-1,-55,217,-2441,41911,-343519,10531025,
 -123024817,2722259791,-64395229031,1218005521129,
 -36874422541945,785879799954887,
 -25331247487596751,708096286059632161,
 -21422225147712360929,741754828422824400415]

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Last modified May 4 15:13 EDT 2024. Contains 372254 sequences. (Running on oeis4.)