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A131909 as a simple table

na(n)
01
11
21
31
41
52
62
71
82
93
103
112
123
133
145
155
163
175
185
196
208
218
225
238
248
2510
2611
2714
2814
298
3013
3113
3216
3318
3421
3525
3625
3714
3822
3921
4026
4129
4234
4339
4446
4546
4625
4739
4836
4943
5047
5155
5263
5373
5485
5585
5646
5771
5864
5975
6079
6190
62102
63118
64136
65158
66158
6785
68131
69117
70135
71139
72154
73169

[1,1,1,1,1,2,2,1,2,3,3,2,3,3,5,5,3,5,5,6,8,8,5,8,
 8,10,11,14,14,8,13,13,16,18,21,25,25,14,22,21,26,
 29,34,39,46,46,25,39,36,43,47,55,63,73,85,85,46,
 71,64,75,79,90,102,118,136,158,158,85,131,117,135,
 139,154,169]