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A197078 as a simple table

na(n)
113
2487
313286
4445506
514895018
6513380599
717446576240
8592290047724
920128502440024
10683993118482402
1123243767206546673
12789980959730204326
1326850332922315114822
14912620325896540690864
1531019623434344238447439

[13,487,13286,445506,14895018,513380599,
 17446576240,592290047724,20128502440024,
 683993118482402,23243767206546673,
 789980959730204326,26850332922315114822,
 912620325896540690864,31019623434344238447439]