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A263215 as a simple table

na(n)
122874
2362522
3362522
45416302
512507525
65416302
778580226
8395174691
9395174691
1078580226
111104667450
1211968129797
1325864201119
1411968129797
151104667450
1615573947878
17347731730746
181606472091969
191606472091969

[22874,362522,362522,5416302,12507525,5416302,
 78580226,395174691,395174691,78580226,1104667450,
 11968129797,25864201119,11968129797,1104667450,
 15573947878,347731730746,1606472091969,
 1606472091969]