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A021984 as a simple table

na(n)
01
126
2457
36822
493333
51210938
615168529
7185357774
82224062445
926316305730
10307996949481
113573147901206
1241156463852037
13471239561238602
145368820120200513
1560908872219620318
16688516109116593309

[1,26,457,6822,93333,1210938,15168529,185357774,
 2224062445,26316305730,307996949481,3573147901206,
 41156463852037,471239561238602,5368820120200513,
 60908872219620318,688516109116593309]