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A221960 as a simple table

n a(n)
1 1
2 1
3 -1
4 1
5 0
6 -3
7 2
8 1
9 0
10 0
11 -4
12 -3
13 12
14 -6
15 1
16 0
17 0
18 0
19 -5
20 -10
21 20
22 30
23 -60
24 24
25 1
26 0
27 0
28 0
29 0
30 -6
31 -15
32 20
33 120
34 -90
35 -270
36 360
37 -120

[1,1,-1,1,0,-3,2,1,0,0,-4,-3,12,-6,1,0,0,0,-5,-10,
 20,30,-60,24,1,0,0,0,0,-6,-15,20,120,-90,-270,360,
 -120]

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Last modified October 18 12:19 EDT 2021. Contains 348067 sequences. (Running on oeis4.)