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A100439 as a simple table

na(n)
10
20
31
44
510
620
731
848
970
1096
11123
12161
13197
14240
15293
16340
17394
18460
19524
20596
21670
22744
23819
24918
251016
261112
271217
281322
291429
301561
311679
321798
331943
342072
352218
362379
372518
382669
392838
403009
413178
423361
433536
443713
453924
464120
474304
484522
494727

[0,0,1,4,10,20,31,48,70,96,123,161,197,240,293,
 340,394,460,524,596,670,744,819,918,1016,1112,
 1217,1322,1429,1561,1679,1798,1943,2072,2218,2379,
 2518,2669,2838,3009,3178,3361,3536,3713,3924,4120,
 4304,4522,4727]