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A006991 as a simple table

na(n)
15
26
37
413
514
615
721
822
923
1029
1130
1231
1334
1437
1538
1639
1741
1846
1947
2053
2155
2261
2362
2465
2569
2670
2771
2877
2978
3079
3185
3286
3387
3493
3594
3695
37101
38102
39103
40109
41110
42111
43118
44119
45127
46133
47134
48137
49138
50141
51142
52143
53145
54149
55151
56154
57157
58158
59159

[5,6,7,13,14,15,21,22,23,29,30,31,34,37,38,39,41,
 46,47,53,55,61,62,65,69,70,71,77,78,79,85,86,87,
 93,94,95,101,102,103,109,110,111,118,119,127,133,
 134,137,138,141,142,143,145,149,151,154,157,158,
 159]