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A046684 as a simple table

na(n)
11
22
33
44
55
67
78
89
911
1013
1116
1217
1318
1419
1521
1623
1725
1827
1929
2031
2132
2233
2337
2439
2541
2643
2745
2847
2949
3051
3153
3255
3357
3459
3561
3664
3767
3869
3971
4072
4173
4277
4379
4481
4583
4687
4789
4891
4993
5095
5197
5298
5399
54100
55101
56103
57107
58109
59111
60113
61119
62121
63123
64125
65127
66128
67129

[1,2,3,4,5,7,8,9,11,13,16,17,18,19,21,23,25,27,29,
 31,32,33,37,39,41,43,45,47,49,51,53,55,57,59,61,
 64,67,69,71,72,73,77,79,81,83,87,89,91,93,95,97,
 98,99,100,101,103,107,109,111,113,119,121,123,125,
 127,128,129]