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A198631 as a simple table

n a(n)
0 1
1 1
2 0
3 -1
4 0
5 1
6 0
7 -17
8 0
9 31
10 0
11 -691
12 0
13 5461
14 0
15 -929569
16 0
17 3202291
18 0
19 -221930581
20 0
21 4722116521
22 0
23 -968383680827
24 0
25 14717667114151
26 0
27 -2093660879252671
28 0
29 86125672563201181
30 0
31 -129848163681107301953
32 0
33 868320396104950823611
34 0

[1,1,0,-1,0,1,0,-17,0,31,0,-691,0,5461,0,-929569,
 0,3202291,0,-221930581,0,4722116521,0,
 -968383680827,0,14717667114151,0,
 -2093660879252671,0,86125672563201181,0,
 -129848163681107301953,0,868320396104950823611,0]

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Last modified April 16 08:27 EDT 2024. Contains 371698 sequences. (Running on oeis4.)