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A213958
as a simple table
n
a(n)
1
5
2
275
3
199735
4
1839121115
5
214090209950060
6
314911377440218697950
7
5858129386840205449108592935
[5,275,199735,1839121115,214090209950060, 314911377440218697950, 5858129386840205449108592935]