A262561 - OEIS

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A262561 as a simple table

n	a(n)
2	-1
3	-2
4	-1
5	1
6	1
7	2
8	-2
9	-3
10	1
11	1
12	-4
13	1
14	1
15	18
16	1
17	1
18	1
19	-47
20	23
21	-41399
22	1
23	3
24	0
25	-322461439
26	1
27	-367
28	3742201
29	613
30	-7
31	1
32	10

[-1,-2,-1,1,1,2,-2,-3,1,1,-4,1,1,18,1,1,1,-47,23, -41399,1,3,0,-322461439,1,-367,3742201,613,-7,1, 10]