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A194140 as a simple table

na(n)
12
27
315
425
538
654
773
894
9118
10145
11175
12207
13242
14280
15320
16363
17409
18458
19509
20563
21620
22680
23742
24807
25875
26946
271019
281095
291174
301255
311339
321426
331516
341608
351703
361801
371902
382005
392111
402220
412332
422446
432563
442683
452805
462930
473058

[2,7,15,25,38,54,73,94,118,145,175,207,242,280,
 320,363,409,458,509,563,620,680,742,807,875,946,
 1019,1095,1174,1255,1339,1426,1516,1608,1703,1801,
 1902,2005,2111,2220,2332,2446,2563,2683,2805,2930,
 3058]