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A018905 as a simple table

na(n)
02
14
29
321
450
5120
6289
7697
81682
94060
109801
1123661
1257122
13137904
14332929

[2,4,9,21,50,120,289,697,1682,4060,9801,23661,
 57122,137904,332929]