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A047531 as a simple table

na(n)
12
23
37
410
511
615
718
819
923
1026
1127
1231
1334
1435
1539
1642
1743
1847
1950
2051
2155
2258
2359
2463
2566
2667
2771
2874
2975
3079
3182
3283
3387
3490
3591
3695
3798
3899
39103
40106
41107
42111
43114
44115
45119
46122
47123
48127
49130
50131
51135
52138
53139
54143
55146
56147
57151
58154
59155
60159

[2,3,7,10,11,15,18,19,23,26,27,31,34,35,39,42,43,
 47,50,51,55,58,59,63,66,67,71,74,75,79,82,83,87,
 90,91,95,98,99,103,106,107,111,114,115,119,122,
 123,127,130,131,135,138,139,143,146,147,151,154,
 155,159]