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A303075 as a simple table

na(n)
11
23
32
47
55
66
74
89
911
1013
1115
128
1310
1419
1523
1612
1714
1829
1916
2017
2118
2231
2320
2421
2524
2625
2727
2826
2922
3028
3163
3232
3333
3434
3535
3637
3730
3840
3939
4038
4141
4242
4347
4448
4549
4651
4743
4855
4956
5050
5152
5259
5357
5461
5564
5665
5745
5867
5936
6044
6169
6253
6373
6471
6546
6662
6775

[1,3,2,7,5,6,4,9,11,13,15,8,10,19,23,12,14,29,16,
 17,18,31,20,21,24,25,27,26,22,28,63,32,33,34,35,
 37,30,40,39,38,41,42,47,48,49,51,43,55,56,50,52,
 59,57,61,64,65,45,67,36,44,69,53,73,71,46,62,75]