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A343880 as a simple table

na(n)
11
24
38
414
520
628
737
846
957
1069
1182
1295
13110
14125
15142
16159
17177
18196
19216
20238
21260
22285
23310
24335
25362
26390
27418
28448
29478
30511
31544
32578
33613
34648
35685
36722
37761
38800
39842
40884
41927
42971
431018
441065
451112
461161
471210
481259
491309
501361
511413
521467
531521

[1,4,8,14,20,28,37,46,57,69,82,95,110,125,142,159,
 177,196,216,238,260,285,310,335,362,390,418,448,
 478,511,544,578,613,648,685,722,761,800,842,884,
 927,971,1018,1065,1112,1161,1210,1259,1309,1361,
 1413,1467,1521]