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A299259 as a simple table

na(n)
01
15
213
326
445
569
698
7133
8173
9218
10269
11325
12386
13453
14525
15602
16685
17773
18866
19965
201069
211178
221293
231413
241538
251669
261805
271946
282093
292245
302402
312565
322733
332906
343085
353269
363458
373653
383853
394058
404269
414485
424706
434933
445165
455402
465645
475893
486146
496405
506669
516938
527213
537493

[1,5,13,26,45,69,98,133,173,218,269,325,386,453,
 525,602,685,773,866,965,1069,1178,1293,1413,1538,
 1669,1805,1946,2093,2245,2402,2565,2733,2906,3085,
 3269,3458,3653,3853,4058,4269,4485,4706,4933,5165,
 5402,5645,5893,6146,6405,6669,6938,7213,7493]