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A138928 as a simple table

na(n)
13
24
35
46
57
68
710
811
912
1013
1114
1215
1316
1417
1518
1619
1721
1823
1924
2026
2130
2231
2332
2434
2538
2639
2740
2843
2945
3049
3154
3256
3361
3462
3563
3666
3775
3879
3980
4085
4187
4298
43101
44117
45120
46122
47127
48130
49138
50154
51161
52167
53170
54178
55183
56184
57186
58187
59191
60192
61199
62205
63207
64208

[3,4,5,6,7,8,10,11,12,13,14,15,16,17,18,19,21,23,
 24,26,30,31,32,34,38,39,40,43,45,49,54,56,61,62,
 63,66,75,79,80,85,87,98,101,117,120,122,127,130,
 138,154,161,167,170,178,183,184,186,187,191,192,
 199,205,207,208]