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A083685 as a simple table

na(n)
12
23
35
411
559
659
7419
8839
95039
105039
1155439
1255439
131081079
141081079
151081079
161441439
1724504479
1824504479
19232792559
20232792559
21232792559
22232792559
235354228879
245354228879
2553542288799
2653542288799
271044074631599

[2,3,5,11,59,59,419,839,5039,5039,55439,55439,
 1081079,1081079,1081079,1441439,24504479,24504479,
 232792559,232792559,232792559,232792559,
 5354228879,5354228879,53542288799,53542288799,
 1044074631599]