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A028795 as a simple table

na(n)
13
26
37
411
512
613
714
815
917
1019
1122
1224
1326
1427
1528
1629
1730
1834
1935
2038
2144
2247
2348
2452
2553
2654
2755
2856
2958
3060
3163
3265
3367
3468
3569
3670
3771
3875
3976
4079

[3,6,7,11,12,13,14,15,17,19,22,24,26,27,28,29,30,
 34,35,38,44,47,48,52,53,54,55,56,58,60,63,65,67,
 68,69,70,71,75,76,79]