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A026428 as a simple table

na(n)
12
23
35
46
58
69
711
812
913
1016
1118
1219
1321
1423
1524
1626
1729
1830
1932
2034
2135
2237
2339
2441
2542
2643
2745
2848
2949
3051
3154
3257
3360
3462
3563
3664
3767
3868
3970
4073
4175
4277
4383
4485
4587
4688
4789
4891
4992
5093
5197
5299
53101
54105
55108
56110
57112
58113
59115
60116
61118
62124
63128
64130
65131
66132
67137
68139

[2,3,5,6,8,9,11,12,13,16,18,19,21,23,24,26,29,30,
 32,34,35,37,39,41,42,43,45,48,49,51,54,57,60,62,
 63,64,67,68,70,73,75,77,83,85,87,88,89,91,92,93,
 97,99,101,105,108,110,112,113,115,116,118,124,128,
 130,131,132,137,139]