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A219470
as a simple table
n
a(n)
1
84
2
2663
3
674954
4
157191488
5
29873644925
6
4758315482104
7
664221777830589
8
85045859176792827
[84,2663,674954,157191488,29873644925, 4758315482104,664221777830589,85045859176792827]