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A193487 as a simple table

na(n)
10
20
30
41
51
65
79
829
962
10181
11422
121166
132885
147788
1519893
1653319
17138931
18372027
19982379
202635898
217026483
2218914903
2350781803
24137201419
25370442111
261004512375
272724867782
287414635185
2920193165834
3055125632502

[0,0,0,1,1,5,9,29,62,181,422,1166,2885,7788,19893,
 53319,138931,372027,982379,2635898,7026483,
 18914903,50781803,137201419,370442111,1004512375,
 2724867782,7414635185,20193165834,55125632502]