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A079326 as a simple table

na(n)
21
32
47
59
617
720
831
935
1049
1154
1271
1377
1497
15104
16127
17135
18161
19170
20199
21209
22241
23252
24287
25299
26337
27350
28391
29405
30449
31464
32511
33527
34577
35594
36647
37665
38721
39740
40799
41819
42881
43902
44967
45989
461057
471080
481151
491175
501249
511274
521351
531377
541457

[1,2,7,9,17,20,31,35,49,54,71,77,97,104,127,135,
 161,170,199,209,241,252,287,299,337,350,391,405,
 449,464,511,527,577,594,647,665,721,740,799,819,
 881,902,967,989,1057,1080,1151,1175,1249,1274,
 1351,1377,1457]