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A125988 as a simple table

na(n)
00
11
22
33
44
57
65
76
88
99
1016
1112
1217
1321
1410
1513
1611
1714
1820
1918
2015
2119
2222
2323
2442
2530
2645
2756
2826
2935
3031
3144
3258
3348
3446
3557
3663
3724
3832
3927
4033
4150
4225
4329
4428
4537
4653
4747
4840
4954
5062
5143
5236
5334
5438
5541
5649
5739
5851
5961
6059
6155
6252
6360
6464
6565
66121
6784
68128
69163
7072

[0,1,2,3,4,7,5,6,8,9,16,12,17,21,10,13,11,14,20,
 18,15,19,22,23,42,30,45,56,26,35,31,44,58,48,46,
 57,63,24,32,27,33,50,25,29,28,37,53,47,40,54,62,
 43,36,34,38,41,49,39,51,61,59,55,52,60,64,65,121,
 84,128,163,72]