A272106 - OEIS

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A272106 as a simple table

n	a(n)
1	2
2	5
3	13
4	1093
5	797161
6	3754733257489862401973357979128773
7	6957596529882152968992225251835887181478451547013

[2,5,13,1093,797161, 3754733257489862401973357979128773, 6957596529882152968992225251835887181478451547013]