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A057436 as a simple table

na(n)
11
22
33
44
55
66
711
812
913
1014
1115
1216
1321
1422
1523
1624
1725
1826
1931
2032
2133
2234
2335
2436
2541
2642
2743
2844
2945
3046
3151
3252
3353
3454
3555
3656
3761
3862
3963
4064
4165
4266
43111
44112
45113
46114
47115
48116
49121
50122
51123
52124
53125
54126
55131
56132
57133
58134
59135
60136
61141
62142
63143

[1,2,3,4,5,6,11,12,13,14,15,16,21,22,23,24,25,26,
 31,32,33,34,35,36,41,42,43,44,45,46,51,52,53,54,
 55,56,61,62,63,64,65,66,111,112,113,114,115,116,
 121,122,123,124,125,126,131,132,133,134,135,136,
 141,142,143]