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A187098 as a simple table

na(n)
11
22
33
44
55
66
77
89
98
1011
1110
1213
1314
1412
1515
1617
1718
1816
1919
2021
2120
2223
2324
2425
2522
2627
2726
2829
2930
3028
3131
3233
3332
3435
3536
3639
3738
3842
3937
4034
4140
4243
4345
4441
4544
4648
4749
4846
4951
5047
5150
5253
5356
5457
5552
5655
5754
5860
5958
6063
6159
6265
6362
6466
6561
6670
6767
6869
6968
7071
7172
7273
7375
7474
7577
7678
7776
7881
7980
8084

[1,2,3,4,5,6,7,9,8,11,10,13,14,12,15,17,18,16,19,
 21,20,23,24,25,22,27,26,29,30,28,31,33,32,35,36,
 39,38,42,37,34,40,43,45,41,44,48,49,46,51,47,50,
 53,56,57,52,55,54,60,58,63,59,65,62,66,61,70,67,
 69,68,71,72,73,75,74,77,78,76,81,80,84]