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A221923 as a simple table

na(n)
16
2350
313228
4508281
519513309
6749481703
728788205897
81105748138634
942471447510183
101631315682219574

[6,350,13228,508281,19513309,749481703,
 28788205897,1105748138634,42471447510183,
 1631315682219574]