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A049973 as a simple table

na(n)
11
23
33
410
518
645
783
8166
9330
10825
111567
123096
136165
1412322
1524637
1649274
1798546
18246365
19468093
20923871
211841585
223680101
237358673
2414716604
2529432713
2658865262
27117730441
28235460844
29470921661
30941843314
311883686621

[1,3,3,10,18,45,83,166,330,825,1567,3096,6165,
 12322,24637,49274,98546,246365,468093,923871,
 1841585,3680101,7358673,14716604,29432713,
 58865262,117730441,235460844,470921661,941843314,
 1883686621]