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A220006 as a simple table

na(n)
120
243
3479
44474
532959
6204056
71209492
87316891
944430342
10260942687
111458406289
127769314333
1339698813306
14195484409069
15930466275825
164292158352171
1719240147010037
1884029266162705
19358361605456031

[20,43,479,4474,32959,204056,1209492,7316891,
 44430342,260942687,1458406289,7769314333,
 39698813306,195484409069,930466275825,
 4292158352171,19240147010037,84029266162705,
 358361605456031]