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A332487 as a simple table

na(n)
12
23
34
45
56
68
79
810
911
1012
1115
1216
1317
1418
1521
1622
1723
1824
1925
2027
2128
2229
2330
2431
2533
2634
2735
2836
2937
3040
3141
3242
3343
3446
3547
3648
3749
3850
3952
4053
4154
4255
4356
4459
4560
4661
4762
4865
4966
5067
5168
5269
5371
5472
5573
5674
5775
5877
5978
6079
6180
6281
6384
6485
6586
6687

[2,3,4,5,6,8,9,10,11,12,15,16,17,18,21,22,23,24,
 25,27,28,29,30,31,33,34,35,36,37,40,41,42,43,46,
 47,48,49,50,52,53,54,55,56,59,60,61,62,65,66,67,
 68,69,71,72,73,74,75,77,78,79,80,81,84,85,86,87]