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A066379 as a simple table

na(n)
13
27
312
418
525
633
743
855
969
1085
11103
12123
13144
14168
15195
16225
17258
18294
19333
20375
21420
22468
23519
24573
25629
26689
27753
28821
29893
30969
311049
321133
331221
341313
351409
361509
371613
381721
391833
401949
412069
422193
432321
442453
452589
462729
472873

[3,7,12,18,25,33,43,55,69,85,103,123,144,168,195,
 225,258,294,333,375,420,468,519,573,629,689,753,
 821,893,969,1049,1133,1221,1313,1409,1509,1613,
 1721,1833,1949,2069,2193,2321,2453,2589,2729,2873]