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A048006 as a simple table

na(n)
10
20
30
43
56
610
725
845
977
10175
11322
12570
131245
142325
154213
169031
1717061
1831421
1966547
20126763
21236203
22496063
23950818
241787346
253730293
267184421
2713598053
2828243063
2954604081
30103918153
31215008363
32416990563
33797154723

[0,0,0,3,6,10,25,45,77,175,322,570,1245,2325,4213,
 9031,17061,31421,66547,126763,236203,496063,
 950818,1787346,3730293,7184421,13598053,28243063,
 54604081,103918153,215008363,416990563,797154723]