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A344414 as a simple table

na(n)
12
23
34
45
56
67
79
810
911
1012
1113
1214
1315
1417
1519
1620
1721
1822
1923
2025
2126
2228
2329
2430
2531
2633
2734
2835
2937
3038
3139
3240
3341
3442
3543
3644
3746
3847
3949
4051
4152
4253
4355
4456
4557
4658
4759
4861
4962
5063
5165
5266
5367
5468
5569
5670
5771
5873
5974
6076
6177
6278
6379
6482
6583
6684
6785

[2,3,4,5,6,7,9,10,11,12,13,14,15,17,19,20,21,22,
 23,25,26,28,29,30,31,33,34,35,37,38,39,40,41,42,
 43,44,46,47,49,51,52,53,55,56,57,58,59,61,62,63,
 65,66,67,68,69,70,71,73,74,76,77,78,79,82,83,84,
 85]