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A013325 as a simple table

n a(n)
1 1
2 -1
3 -1
4 -359
5 -1681
6 -52981
7 -1887113
8 -27492467
9 -3259141
10 -1194145112779
11 -55919619312049
12 -7462251938940527
13 -113201511292945547
14 -1055956853774285077
15 -44032898634010565651
16 -75833822693358307239889

[1,-1,-1,-359,-1681,-52981,-1887113,-27492467,
 -3259141,-1194145112779,-55919619312049,
 -7462251938940527,-113201511292945547,
 -1055956853774285077,-44032898634010565651,
 -75833822693358307239889]

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Last modified April 10 22:33 EDT 2021. Contains 342856 sequences. (Running on oeis4.)