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A298856 as a simple table

na(n)
13
210
321
455
578
6105
7136
8171
9253
10351
11406
12465
13595
14666
15741
16820
17903
181081
191275
201378
211711
221830
231953
242211
252485
262628
272775
282926
293081
303403
313741
323916
334465
344656
355050
365253
375671
385886
396105
406328
417021
427503
437750
448001
458515
469045
479316
489591

[3,10,21,55,78,105,136,171,253,351,406,465,595,
 666,741,820,903,1081,1275,1378,1711,1830,1953,
 2211,2485,2628,2775,2926,3081,3403,3741,3916,4465,
 4656,5050,5253,5671,5886,6105,6328,7021,7503,7750,
 8001,8515,9045,9316,9591]