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A039156 as a simple table

na(n)
12
23
34
45
56
67
78
89
910
1011
1124
1225
1326
1427
1528
1629
1730
1831
1932
2035
2136
2237
2338
2439
2540
2641
2742
2843
2946
3047
3148
3249
3350
3451
3552
3653
3754
3857
3958
4059
4160
4261
4362
4463
4564
4665
4768
4869
4970
5071
5172
5273
5374
5475
5576
5679
5780
5881
5982
6083
6184
6285
6386
6487
6590
6691
6792
6893
6994
7095

[2,3,4,5,6,7,8,9,10,11,24,25,26,27,28,29,30,31,32,
 35,36,37,38,39,40,41,42,43,46,47,48,49,50,51,52,
 53,54,57,58,59,60,61,62,63,64,65,68,69,70,71,72,
 73,74,75,76,79,80,81,82,83,84,85,86,87,90,91,92,
 93,94,95]