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A243356 as a simple table

na(n)
12
23
34
45
56
67
78
89
910
1012
1114
1215
1316
1418
1520
1622
1724
1827
1930
2032
2133
2234
2335
2436
2539
2640
2744
2846
2948
3051
3154
3255
3356
3457
3562
3664
3765
3866
3968
4069
4170
4274
4375
4477
4578
4680
4781
4882
4985
5086
5187
5288
5390
5491
5592
5693
5795
5896
5998
6099
61105
62106
63108
64111
65112

[2,3,4,5,6,7,8,9,10,12,14,15,16,18,20,22,24,27,30,
 32,33,34,35,36,39,40,44,46,48,51,54,55,56,57,62,
 64,65,66,68,69,70,74,75,77,78,80,81,82,85,86,87,
 88,90,91,92,93,95,96,98,99,105,106,108,111,112]