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A068780 as a simple table

na(n)
18
29
314
415
520
621
724
825
926
1027
1132
1233
1334
1435
1538
1639
1744
1845
1948
2049
2150
2251
2354
2455
2556
2657
2762
2863
2964
3065
3168
3269
3374
3475
3576
3677
3780
3881
3984
4085
4186
4287
4390
4491
4592
4693
4794
4895
4998
5099
51104
52105
53110
54111
55114
56115
57116
58117
59118
60119
61120
62121
63122
64123
65124

[8,9,14,15,20,21,24,25,26,27,32,33,34,35,38,39,44,
 45,48,49,50,51,54,55,56,57,62,63,64,65,68,69,74,
 75,76,77,80,81,84,85,86,87,90,91,92,93,94,95,98,
 99,104,105,110,111,114,115,116,117,118,119,120,
 121,122,123,124]