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A329138 as a simple table

na(n)
12
23
34
45
56
67
78
89
910
1011
1113
1214
1315
1416
1517
1618
1719
1821
1922
2023
2125
2226
2327
2429
2530
2631
2732
2833
2934
3035
3136
3237
3338
3439
3541
3642
3743
3846
3947
4049
4150
4251
4353
4454
4555
4657
4758
4859
4961
5062
5164
5265
5366
5467
5569
5670
5771
5873
5974
6075
6177
6278
6379
6481
6582
6683

[2,3,4,5,6,7,8,9,10,11,13,14,15,16,17,18,19,21,22,
 23,25,26,27,29,30,31,32,33,34,35,36,37,38,39,41,
 42,43,46,47,49,50,51,53,54,55,57,58,59,61,62,64,
 65,66,67,69,70,71,73,74,75,77,78,79,81,82,83]