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A015155 as a simple table

n a(n)
0 1
1 2
2 -1
3 28
4 121
5 7382
6 -109261
7 30010768
8 1850263021
9 1970456206922
10 -481096287226201
11 2065208924598783748
12 2021994980843488552801
13 34652498137874270655807422
14 -135624483203827510877656066021

[1,2,-1,28,121,7382,-109261,30010768,1850263021,
 1970456206922,-481096287226201,
 2065208924598783748,2021994980843488552801,
 34652498137874270655807422,
 -135624483203827510877656066021]

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Last modified August 13 20:26 EDT 2022. Contains 356107 sequences. (Running on oeis4.)