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A343859 as a simple table

na(n)
12
27
314
425
538
655
774
897
9126
10157
11194
12235
13278
14325
15378
16437
17498
18565
19636
20709
21788
22871
23960
241057
251158
261261
271368
281477
291590
301717
311848
321985
332124
342273
352424
362581
372744
382911
393084
403263
413444
423635
433828
444025
454224
464435
474658
484885
495114
505347

[2,7,14,25,38,55,74,97,126,157,194,235,278,325,
 378,437,498,565,636,709,788,871,960,1057,1158,
 1261,1368,1477,1590,1717,1848,1985,2124,2273,2424,
 2581,2744,2911,3084,3263,3444,3635,3828,4025,4224,
 4435,4658,4885,5114,5347]