A358310 - OEIS

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A358310 as a simple table

n	a(n)
1	3
2	2
3	1
4	13
5	-1
6	12
7	-1
8	59
9	11
10	-1
11	-1
12	10
13	-1
14	9
15	8
16	7
17	-1
18	-1
19	6
20	-1
21	-1
22	5
23	4
24	-1
25	2528242167
26	-1

[3,2,1,13,-1,12,-1,59,11,-1,-1,10,-1,9,8,7,-1,-1, 6,-1,-1,5,4,-1,2528242167,-1]