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A309564 as a simple table

n a(n)
1 1
2 1
3 1
4 1
5 -1
6 1
7 -1
8 3
9 -15
10 59
11 -189
12 567
13 -1863
14 7141
15 -29817
16 125919
17 -528329
18 2238303
19 -9769917
20 44312225
21 -208177669
22 1005840685
23 -4972561375
24 25105651267
25 -129470605611
26 682486916465
27 -3678964401327
28 20276967904907
29 -114199064797229
30 656666370592173

[1,1,1,1,-1,1,-1,3,-15,59,-189,567,-1863,7141,
 -29817,125919,-528329,2238303,-9769917,44312225,
 -208177669,1005840685,-4972561375,25105651267,
 -129470605611,682486916465,-3678964401327,
 20276967904907,-114199064797229,656666370592173]

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Last modified September 1 06:23 EDT 2024. Contains 375575 sequences. (Running on oeis4.)