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A220366 as a simple table

na(n)
14
240
3367
43014
524345
6193978
71540532
812219682
996894257
10768219855
116090555163
1248286349012
13382816368708
143034983002768
1524061456658532
16190760098278499
171512352923646137
1811989988327330630
1995057058166697566

[4,40,367,3014,24345,193978,1540532,12219682,
 96894257,768219855,6090555163,48286349012,
 382816368708,3034983002768,24061456658532,
 190760098278499,1512352923646137,
 11989988327330630,95057058166697566]