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A306849 as a simple table

na(n)
12801
2637421
32625641
478914411
5195534851
67294932341
719408913261
857765899591
9133311428141
10212872312241
111508520377381
121960226457281
135412080545901
1411543487851801
1519383356741711
1620748237948131
1724212632812551
1825413171899021
1928240486488581
2046922470889141

[2801,637421,2625641,78914411,195534851,
 7294932341,19408913261,57765899591,133311428141,
 212872312241,1508520377381,1960226457281,
 5412080545901,11543487851801,19383356741711,
 20748237948131,24212632812551,25413171899021,
 28240486488581,46922470889141]