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A202407 as a simple table

n a(n)
0 0
1 1
2 -1
3 1
4 -1
5 0
6 -1
7 -1
8 17
9 587
10 3151
11 -173
12 -2641109
13 -6343201
14 29002301
15 24753572807
16 6013935944287
17 -979056822493
18 -11395219462649
19 -4313800586682649
20 -2178360615103441
21 74893762899375939059
22 5307412498351127900521

[0,1,-1,1,-1,0,-1,-1,17,587,3151,-173,-2641109,
 -6343201,29002301,24753572807,6013935944287,
 -979056822493,-11395219462649,-4313800586682649,
 -2178360615103441,74893762899375939059,
 5307412498351127900521]

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Last modified April 18 13:50 EDT 2024. Contains 371780 sequences. (Running on oeis4.)