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A195945
as a simple table
n
a(n)
1
1
2
13
3
169
4
2197
5
28561
6
371293
7
62748517
8
137858491849
9
3937376385699289
[1,13,169,2197,28561,371293,62748517,137858491849, 3937376385699289]