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A303412 as a simple table

na(n)
10
261
3541
4902
54013
629411
7160247
8660748
93071197
1017079507
1188199621
12419285701
132063343133
1410608771290
1553689192266
16265848111937
171327085663799
186701302273037
1933718513860297
20168717573787828
21845811333794914

[0,61,541,902,4013,29411,160247,660748,3071197,
 17079507,88199621,419285701,2063343133,
 10608771290,53689192266,265848111937,
 1327085663799,6701302273037,33718513860297,
 168717573787828,845811333794914]