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A028796 as a simple table

na(n)
12
25
36
48
513
614
715
818
919
1020
1122
1224
1332
1434
1535
1639
1742
1843
1945
2046
2147
2250
2352
2453
2554
2655
2756
2857
2958
3060
3162
3266
3367
3471
3572
3673
3774
3876
3979
4080
4182

[2,5,6,8,13,14,15,18,19,20,22,24,32,34,35,39,42,
 43,45,46,47,50,52,53,54,55,56,57,58,60,62,66,67,
 71,72,73,74,76,79,80,82]