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A241893 as a simple table

na(n)
00
10
20
38
428
5120
6460
71848
87308
929240
10116620
11466488
121864588
137458360
1429827980
15119311928
16477225868
171908903480
187635526540
1930542106168
20122168075148
21488672300600
221954687804300

[0,0,0,8,28,120,460,1848,7308,29240,116620,466488,
 1864588,7458360,29827980,119311928,477225868,
 1908903480,7635526540,30542106168,122168075148,
 488672300600,1954687804300]