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A122515 as a simple table

na(n)
12
24
37
412
520
630
743
858
977
10102
11128
12160
13195
14232
15273
16320
17372
18426
19485
20548
21613
22684
23758
24838
25926
261018
271112
281210
291309
301412
311528
321648
331774
341902
352040
362180
372325
382476
392631
402792
412958
423126
433303
443482
453665
463850
474046
484254
494466

[2,4,7,12,20,30,43,58,77,102,128,160,195,232,273,
 320,372,426,485,548,613,684,758,838,926,1018,1112,
 1210,1309,1412,1528,1648,1774,1902,2040,2180,2325,
 2476,2631,2792,2958,3126,3303,3482,3665,3850,4046,
 4254,4466]