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A288409
as a simple table
n
a(n)
1
67
2
79
3
1009
4
10459
5
34459489
6
654729139
7
316234143289
8
2980227913743310874726229193921939
[67,79,1009,10459,34459489,654729139,316234143289, 2980227913743310874726229193921939]