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A217927 as a simple table

na(n)
12
21
34
43
510
69
78
87
96
105
1112
1211
1318
1417
1516
1615
1714
1813
1930
2029
2128
2227
2326
2425
2524
2623
2722
2821
2920
3019
3136
3235
3334
3433
3532
3631
3748
3847
3946
4045
4144
4243
4342
4441
4540
4639
4770
4869
4968
5067
5166
5265
5364
5463
5562
5661
5760
5859
5958
6057
6156
6255
6338
6437
6554
6653
6752
6851
6950
7049
7180
7279
7378
7477
7576
7675
7774
7873
7972
8071
81102
82101
83100
8499
8598
8697
8796
8895
8994
9093
9192
9291
9390
9489

[2,1,4,3,10,9,8,7,6,5,12,11,18,17,16,15,14,13,30,
 29,28,27,26,25,24,23,22,21,20,19,36,35,34,33,32,
 31,48,47,46,45,44,43,42,41,40,39,70,69,68,67,66,
 65,64,63,62,61,60,59,58,57,56,55,38,37,54,53,52,
 51,50,49,80,79,78,77,76,75,74,73,72,71,102,101,
 100,99,98,97,96,95,94,93,92,91,90,89]