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A318872 as a simple table

na(n)
11
23
36
412
519
627
736
849
964
1081
1199
12118
13138
14169
15201
16240
17280
18323
19378
20437
21500
22564
23629
24695
25762
26830
27899
28969
291040
301112
311185
321271
331376
341482
351589
361697
371806
381916
392027
402145
412280
422416
432553
442709
452866
463024
473183
483343
493504
503666
513829
523993
534158
544324
554491
564675
574860
585046
595233
605428

[1,3,6,12,19,27,36,49,64,81,99,118,138,169,201,
 240,280,323,378,437,500,564,629,695,762,830,899,
 969,1040,1112,1185,1271,1376,1482,1589,1697,1806,
 1916,2027,2145,2280,2416,2553,2709,2866,3024,3183,
 3343,3504,3666,3829,3993,4158,4324,4491,4675,4860,
 5046,5233,5428]