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A262519 as a simple table

na(n)
01
12
23
34
43
54
65
75
86
97
107
118
126
139
1410
1511
1611
1712
1813
1913
2014
2115
2214
2315
2410
2516
2617
2717
2818
2919
3020
3119
3221
3322
3422
3523
3624
3723
3825
3926
4015
4116
4216
4317
4418
4518
4619
4719
4820
4920
5021
5122
5221
5322
5423
5523
5624
5724
5824
5925
6021
6126
6222
6323
6423
6524
6624
6724
6825
6926
7026
7127
7227
7327
7428
7529
7628
7730
7831
7931
8032
8133
8232
8333
8428
8533
8634
8729
8835
8936
9037
9137

[1,2,3,4,3,4,5,5,6,7,7,8,6,9,10,11,11,12,13,13,14,
 15,14,15,10,16,17,17,18,19,20,19,21,22,22,23,24,
 23,25,26,15,16,16,17,18,18,19,19,20,20,21,22,21,
 22,23,23,24,24,24,25,21,26,22,23,23,24,24,24,25,
 26,26,27,27,27,28,29,28,30,31,31,32,33,32,33,28,
 33,34,29,35,36,37,37]