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A260256 as a simple table

na(n)
15
28
39
412
515
621
724
830
936
1037
1139
1245
1353
1460
1567
1668
1769
1881
1984
2089
2193
2299
23105
24111
25112
26113
27117
28120
29121
30127
31129
32131
33143
34144
35157
36158
37165
38172
39173
40184
41185
42188
43195
44202
45203
46204
47207
48211
49215
50216
51217
52219
53222
54225
55226
56231
57248
58251
59276
60277
61279
62284
63288

[5,8,9,12,15,21,24,30,36,37,39,45,53,60,67,68,69,
 81,84,89,93,99,105,111,112,113,117,120,121,127,
 129,131,143,144,157,158,165,172,173,184,185,188,
 195,202,203,204,207,211,215,216,217,219,222,225,
 226,231,248,251,276,277,279,284,288]