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A028784 as a simple table

na(n)
17
211
313
414
517
621
722
823
926
1028
1131
1233
1334
1435
1539
1641
1742
1844
1946
2047
2151
2252
2353
2455
2556
2659
2761
2862
2963
3065
3166
3267
3368
3469
3570

[7,11,13,14,17,21,22,23,26,28,31,33,34,35,39,41,
 42,44,46,47,51,52,53,55,56,59,61,62,63,65,66,67,
 68,69,70]