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A091733 as a simple table

na(n)
12
23
34
45
56
67
72
89
94
1011
1112
1213
133
149
1516
1617
1718
187
197
2021
214
2223
2324
2425
2526
263
2710
289
2930
3031
315
3233
3334
3435
3511
3613
3710
387
3916
4041
4142
4225
436
4445
4516
4647
4748
4849
4918
5051
5152
529
5354
5419
5556
569
577
5859
5960
6061
6113
625
634
6465
6516
6667
6729
6869
6970
7011
7172
7225
738
7447
7576
7645
7723
7855
7923

[2,3,4,5,6,7,2,9,4,11,12,13,3,9,16,17,18,7,7,21,4,
 23,24,25,26,3,10,9,30,31,5,33,34,35,11,13,10,7,16,
 41,42,25,6,45,16,47,48,49,18,51,52,9,54,19,56,9,7,
 59,60,61,13,5,4,65,16,67,29,69,70,11,72,25,8,47,
 76,45,23,55,23]