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A304881 as a simple table

na(n)
11
23
32
45
57
69
74
811
913
1015
116
1210
1317
1419
1521
1614
1723
1825
1927
208
2129
2231
2333
2418
2512
2622
2735
2837
2939
3026
3141
3243
3345
3420
3547
3649
3751
3830
3934
4053
4155
4257
4338
4459
4561
4663
4728
4865
4967
5069
5142
5246
5371
5473
5575
5650
5777
5879
5981
6016
6183
6285
6387
6454
6524
6658
6789

[1,3,2,5,7,9,4,11,13,15,6,10,17,19,21,14,23,25,27,
 8,29,31,33,18,12,22,35,37,39,26,41,43,45,20,47,49,
 51,30,34,53,55,57,38,59,61,63,28,65,67,69,42,46,
 71,73,75,50,77,79,81,16,83,85,87,54,24,58,89]