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A198960 as a simple table

na(n)
02
126
2242
32186
419682
5177146
61594322
714348906
8129140162
91162261466
1010460353202
1194143178826
12847288609442
137625597484986
1468630377364882
15617673396283946
165559060566555522
1750031545098999706
18450283905890997362

[2,26,242,2186,19682,177146,1594322,14348906,
 129140162,1162261466,10460353202,94143178826,
 847288609442,7625597484986,68630377364882,
 617673396283946,5559060566555522,
 50031545098999706,450283905890997362]