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A284847 as a simple table

na(n)
12
23
35
49
511
612
714
817
920
1021
1123
1227
1330
1431
1533
1636
1738
1839
1941
2045
2147
2248
2350
2453
2556
2657
2759
2862
2964
3065
3167
3271
3374
3475
3577
3681
3783
3884
3986
4089
4192
4293
4395
4499
45102
46103
47105
48108
49110
50111
51113
52117
53120
54121
55123
56127
57129
58130
59132
60135
61138

[2,3,5,9,11,12,14,17,20,21,23,27,30,31,33,36,38,
 39,41,45,47,48,50,53,56,57,59,62,64,65,67,71,74,
 75,77,81,83,84,86,89,92,93,95,99,102,103,105,108,
 110,111,113,117,120,121,123,127,129,130,132,135,
 138]