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A193490 as a simple table

na(n)
10
20
30
40
50
60
71
81
98
1015
1170
12165
13608
141601
155259
1614564
1745040
18127521
19381691
201090130
213202382
229171574
2326642413
2476312777
25220134939
26629965221
271808975528
285170502225
2914801940226
3042257089390

[0,0,0,0,0,0,1,1,8,15,70,165,608,1601,5259,14564,
 45040,127521,381691,1090130,3202382,9171574,
 26642413,76312777,220134939,629965221,1808975528,
 5170502225,14801940226,42257089390]