A162086 - OEIS

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A162086 as a simple table

n	a(n)
1	4
2	86
3	14178
4	21907055
5	348053502590
6	60704077222861152
7	122233352821430587249163
8	2957950981271006387648141644093

[4,86,14178,21907055,348053502590, 60704077222861152,122233352821430587249163, 2957950981271006387648141644093]