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A234853 as a simple table

na(n)
12
23
34
45
56
67
79
811
912
1013
1115
1216
1318
1419
1520
1622
1726
1827
1929
2030
2134
2235
2337
2440
2544
2646
2748
2850
2953
3054
3155
3259
3360
3461
3562
3668
3776
3879
3980
4081
4185
4289
4391
4494
4596
4699
47100
48102
49110
50111
51112
52117
53122
54123
55125
56126
57134
58138
59139
60141
61144
62147

[2,3,4,5,6,7,9,11,12,13,15,16,18,19,20,22,26,27,
 29,30,34,35,37,40,44,46,48,50,53,54,55,59,60,61,
 62,68,76,79,80,81,85,89,91,94,96,99,100,102,110,
 111,112,117,122,123,125,126,134,138,139,141,144,
 147]