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A255879 as a simple table

na(n)
11
23
34
46
510
615
716
818
921
1028
1136
1245
1346
1448
1551
1655
1766
1878
1991
20105
21106
22108
23111
24115
25120
26136
27153
28171
29190
30210
31211
32213
33216
34220
35225
36231
37253
38276
39300
40325
41351
42378
43379
44381
45384
46388
47393
48399
49406
50435
51465
52496
53528
54561
55595
56630

[1,3,4,6,10,15,16,18,21,28,36,45,46,48,51,55,66,
 78,91,105,106,108,111,115,120,136,153,171,190,210,
 211,213,216,220,225,231,253,276,300,325,351,378,
 379,381,384,388,393,399,406,435,465,496,528,561,
 595,630]