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A097423 as a simple table

na(n)
11
23
311
4275
57535
673843
71276429
8138766067
9989263291643
107301752355616983
1155566999221913933083
12434538985460750767066613
133482368080874980096524258963
1428534304884670510863221395297153

[1,3,11,275,7535,73843,1276429,138766067,
 989263291643,7301752355616983,
 55566999221913933083,434538985460750767066613,
 3482368080874980096524258963,
 28534304884670510863221395297153]