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A006254 as a simple table

na(n)
12
23
34
46
57
69
710
812
915
1016
1119
1221
1322
1424
1527
1630
1731
1834
1936
2037
2140
2242
2345
2449
2551
2652
2754
2855
2957
3064
3166
3269
3370
3475
3576
3679
3782
3884
3987
4090
4191
4296
4397
4499
45100
46106
47112
48114
49115
50117
51120
52121
53126
54129
55132
56135
57136
58139
59141
60142
61147
62154
63156
64157

[2,3,4,6,7,9,10,12,15,16,19,21,22,24,27,30,31,34,
 36,37,40,42,45,49,51,52,54,55,57,64,66,69,70,75,
 76,79,82,84,87,90,91,96,97,99,100,106,112,114,115,
 117,120,121,126,129,132,135,136,139,141,142,147,
 154,156,157]