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A189877 as a simple table

na(n)
11
20
30
42
50
60
70
80
90
104
1156
12172
13680
141348
156576
1634568
17107624
18413760
191697288
208035558
2137441416
22192483420
231115143224

[1,0,0,2,0,0,0,0,0,4,56,172,680,1348,6576,34568,
 107624,413760,1697288,8035558,37441416,192483420,
 1115143224]