A376068 - OEIS

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A376068 as a simple table

n	a(n)
1	1
2	2
3	3
4	7
5	4
6	57
7	5
8	3991
9	6
10	19108909
11	8
12	486867178748497
13	9
14	266669605960335497200501136827
15	10
16	79014087492267334815685283447201270968760518233020971656781
17	11

[1,2,3,7,4,57,5,3991,6,19108909,8,486867178748497, 9,266669605960335497200501136827,10, 79014087492267334815685283447201270968760518233020\ 971656781,11]