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A075217 as a simple table

na(n)
10
20
30
40
51
622
738
8504
91468
106945
1111046
12115186
13119496
14677774
152013619

[0,0,0,0,1,22,38,504,1468,6945,11046,115186,
 119496,677774,2013619]