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A266339 as a simple table

na(n)
01
14
29
318
433
556
694
7156
8255
9416
10677
111098
121780
132884
144669
157558
1612233
1719796
1832034
1951836
2083875
21135716
22219597
23355318
24574920
25930244
261505169
272435418
283940593
296376016
3010316614
3116692636
3227009255
3343701896
3470711157
35114413058
36185124220

[1,4,9,18,33,56,94,156,255,416,677,1098,1780,2884,
 4669,7558,12233,19796,32034,51836,83875,135716,
 219597,355318,574920,930244,1505169,2435418,
 3940593,6376016,10316614,16692636,27009255,
 43701896,70711157,114413058,185124220]