A132570 - OEIS

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A132570 as a simple table

n	a(n)
1	2
2	13
3	518
4	294867
5	3931788485135
6	789762815199205645609347669
7	2777400274596078368562463268089427466325733188125361616

[2,13,518,294867,3931788485135, 789762815199205645609347669, 27774002745960783685624632680894274663257331881253\ 61616]