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A074215 as a simple table

na(n)
11
22
33
44
57
68
79
811
913
1014
1116
1217
1319
1421
1522
1623
1726
1827
1928
2029
2131
2232
2333
2434
2537
2638
2739
2841
2943
3044
3146
3247
3349
3451
3552
3653
3757
3858
3959
4061
4162
4263
4364
4467
4568
4669
4771
4873
4974
5076
5177
5279
5381
5482
5583
5686
5787
5888
5989
6092
6193
6294
6397
6498
6599
66101

[1,2,3,4,7,8,9,11,13,14,16,17,19,21,22,23,26,27,
 28,29,31,32,33,34,37,38,39,41,43,44,46,47,49,51,
 52,53,57,58,59,61,62,63,64,67,68,69,71,73,74,76,
 77,79,81,82,83,86,87,88,89,92,93,94,97,98,99,101]