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A097502 as a simple table

na(n)
12
23
34
45
56
68
78
811
912
1013
1114
1214
1317
1418
1518
1620
1720
1823
1924
2025
2126
2228
2329
2430
2532
2632
2733
2835
2938
3038
3139
3241
3342
3443
3544
3644
3746
3847
3948
4048
4150
4253
4354
4456
4558
4659
4760
4860
4961
5062
5162
5263
5365
5467
5568
5668
5771
5872
5972
6073
6174
6274
6377
6478
6580
6680
6781
6883
6984
7085
7186
7288

[2,3,4,5,6,8,8,11,12,13,14,14,17,18,18,20,20,23,
 24,25,26,28,29,30,32,32,33,35,38,38,39,41,42,43,
 44,44,46,47,48,48,50,53,54,56,58,59,60,60,61,62,
 62,63,65,67,68,68,71,72,72,73,74,74,77,78,80,80,
 81,83,84,85,86,88]