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A022562 as a simple table

na(n)
11
21
32
45
514
650
7191
8881
94494
1026389
11184749
121728404
1323805256
14491544474
1514491876320

[1,1,2,5,14,50,191,881,4494,26389,184749,1728404,
 23805256,491544474,14491876320]