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A207478
as a simple table
n
a(n)
1
10686
2
114190596
3
415949940602
4
1897778216001770
5
8467264566580418754
6
37628798991659309387420
[10686,114190596,415949940602,1897778216001770, 8467264566580418754,37628798991659309387420]