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A111009 as a simple table

na(n)
15
213
341
41093
5797161
621523361
7926510094425921
81716841910146256242328924544641
93754733257489862401973357979128773
106957596529882152968992225251835887181478451547013

[5,13,41,1093,797161,21523361,926510094425921,
 1716841910146256242328924544641,
 3754733257489862401973357979128773,
 6957596529882152968992225251835887181478451547013]