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A199520
as a simple table
n
a(n)
1
10
2
6300
3
2513869
4
425836476
5
1036302685728
6
1049206835165446
7
506637005741617919
[10,6300,2513869,425836476,1036302685728, 1049206835165446,506637005741617919]