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A206845
as a simple table
n
a(n)
1
14124
2
199487376
3
1709151563122
4
15348900754966668
5
138717281035824236746
6
1253153235463965319380998
[14124,199487376,1709151563122,15348900754966668, 138717281035824236746,1253153235463965319380998]