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A298375 as a simple table

na(n)
12
25
311
418
529
643
761
884
9111
10145
11183
12230
13281
14343
15409
16488
17571
18669
19771
20890
211013
221155
231301
241468
251639
261833
272031
282254
292481
302735
312993
323280
333571
343893
354219
364578
374941
385339
395741
406180
416623
427105
437591
448118
458649
469223
479801
4810424

[2,5,11,18,29,43,61,84,111,145,183,230,281,343,
 409,488,571,669,771,890,1013,1155,1301,1468,1639,
 1833,2031,2254,2481,2735,2993,3280,3571,3893,4219,
 4578,4941,5339,5741,6180,6623,7105,7591,8118,8649,
 9223,9801,10424]