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A306311 as a simple table

na(n)
11
22
33
44
55
66
77
88
99
1011
1112
1213
1314
1415
1518
1616
1724
1817
1925
2019
2132
2221
2336
2422
2528
2623
2735
2826
2945
3027
3154
3233
3334
3438
3529
3639
3742
3844
3946
4048
4156
4252
4351
4457
4555
4658
4766
4864
4965
5062
5149
5275
5368
5463
5569
5672
5776
5878
5988
6074
6181
6284
6399
6492
6582
6696
67112
68116
69114
70124
71128
7285
73126
7495
7586
76115
7731
78125
7977
80135
81145
82155

[1,2,3,4,5,6,7,8,9,11,12,13,14,15,18,16,24,17,25,
 19,32,21,36,22,28,23,35,26,45,27,54,33,34,38,29,
 39,42,44,46,48,56,52,51,57,55,58,66,64,65,62,49,
 75,68,63,69,72,76,78,88,74,81,84,99,92,82,96,112,
 116,114,124,128,85,126,95,86,115,31,125,77,135,
 145,155]