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A120918 as a simple table

na(n)
01
112
2124
31212
411512
5107544
6994236
79128024
883400856
9759387964
106896903064
1162519804504
12565914425336
135116780986152
1446223426993576
15417279346904792
163764890593799336
1733953608251139560
18306100904240342268

[1,12,124,1212,11512,107544,994236,9128024,
 83400856,759387964,6896903064,62519804504,
 565914425336,5116780986152,46223426993576,
 417279346904792,3764890593799336,
 33953608251139560,306100904240342268]