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A273833 as a simple table

na(n)
01
15
226
371
4147
5264
6428
7649
8933
91290
101726
112251
122871
133596
144432
155389
166473
177694
189058
1910575
2012251
2114096
2216116
2318321
2420717
2523314
2626118
2729139
2832383
2935860
3039576
3143541
3247761
3352246
3457002
3562039
3667363
3772984
3878908
3985145
4091701
4198586

[1,5,26,71,147,264,428,649,933,1290,1726,2251,
 2871,3596,4432,5389,6473,7694,9058,10575,12251,
 14096,16116,18321,20717,23314,26118,29139,32383,
 35860,39576,43541,47761,52246,57002,62039,67363,
 72984,78908,85145,91701,98586]