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A273089 as a simple table

na(n)
10
20
30
40
50
60
70
83
90
100
115
126
130
140
15584
16882
170
180
1918026
20194741
210
220
23644414
24960834
250
260
27229910636

[0,0,0,0,0,0,0,3,0,0,5,6,0,0,584,882,0,0,18026,
 194741,0,0,644414,960834,0,0,229910636]