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A370517 as a simple table

na(n)
13
27
37
47
547
6251
7421
8421
99769
109769
1136469
1236469
1336469
14184224493
152159263321
1613848073963
1733980350373

[3,7,7,7,47,251,421,421,9769,9769,36469,36469,
 36469,184224493,2159263321,13848073963,
 33980350373]