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A028805 as a simple table

na(n)
12
23
35
46
57
610
711
814
915
1017
1118
1219
1320
1421
1522
1623
1726
1827
1928
2030
2131
2233
2334
2435
2537
2638
2739
2840
2942
3043
3144
3245
3346
3447
3550
3651
3753
3854
3955
4056
4157
4258
4359
4460
4561
4662
4763
4865
4966
5067
5168
5270
5371
5474
5575
5676
5778
5879
5980
6082
6183
6284
6386
6487
6588
6689
6790
6891

[2,3,5,6,7,10,11,14,15,17,18,19,20,21,22,23,26,27,
 28,30,31,33,34,35,37,38,39,40,42,43,44,45,46,47,
 50,51,53,54,55,56,57,58,59,60,61,62,63,65,66,67,
 68,70,71,74,75,76,78,79,80,82,83,84,86,87,88,89,
 90,91]