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A210828 as a simple table

na(n)
14
247
31307
477587
59532771
62382934915
71203182006883
81223431341113467
92503405292687579547
1010310784667022325909483
1185532677566328699199301659
121430104344703313378401501706139
1348228702523491961059131488089168571

[4,47,1307,77587,9532771,2382934915,1203182006883,
 1223431341113467,2503405292687579547,
 10310784667022325909483,
 85532677566328699199301659,
 1430104344703313378401501706139,
 48228702523491961059131488089168571]