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A089457 as a simple table

na(n)
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
191
2021
21573
229140
23105417
24982767
257919375
2657387444

[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,21,573,
 9140,105417,982767,7919375,57387444]