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A304016 as a simple table

na(n)
13
2120
3281
41318
55162
620979
787747
8363807
91503951
106293212
1126205966
12109324860
13456564651
141906061826
157958703070
1633240668699
17138822265649
18579797632188
192421619456162
2010114301541455
2142244329291518

[3,120,281,1318,5162,20979,87747,363807,1503951,
 6293212,26205966,109324860,456564651,1906061826,
 7958703070,33240668699,138822265649,579797632188,
 2421619456162,10114301541455,42244329291518]