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A280098 as a simple table

na(n)
11
22
33
45
56
67
77
88
911
1010
1111
1214
1313
1417
1515
1616
1719
1818
1928
2020
2121
2224
2325
2431
2525
2630
2727
2831
2935
3030
3131
3235
3338
3441
3535
3636
3737
3838
3954
4046
4141
4245
4343
4453
4549
4646
4757
4848
4962
5055
5151
5255
5356
5476
5555
5660
5757
5863
5971
6060
6180
6262
6363
6477
6565
6666
6767

[1,2,3,5,6,7,7,8,11,10,11,14,13,17,15,16,19,18,28,
 20,21,24,25,31,25,30,27,31,35,30,31,35,38,41,35,
 36,37,38,54,46,41,45,43,53,49,46,57,48,62,55,51,
 55,56,76,55,60,57,63,71,60,80,62,63,77,65,66,67]