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A048973 as a simple table

na(n)
14
27
39
412
513
615
720
823
926
1027
1128
1231
1336
1438
1539
1642
1744
1848
1950
2052
2153
2255
2356
2461
2563
2664
2766
2874
2979
3083
3185
3289
3398
34101
35103
36107
37109
38114
39120
40123
41125
42128
43131
44133
45136
46144
47152
48157
49159
50160
51165
52168
53182
54184
55190
56192
57198
58203
59208
60212

[4,7,9,12,13,15,20,23,26,27,28,31,36,38,39,42,44,
 48,50,52,53,55,56,61,63,64,66,74,79,83,85,89,98,
 101,103,107,109,114,120,123,125,128,131,133,136,
 144,152,157,159,160,165,168,182,184,190,192,198,
 203,208,212]