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A025706 as a simple table

na(n)
01
13
26
310
415
521
628
737
847
958
1070
1183
1297
13113
14130
15148
16167
17187
18208
19231
20255
21280
22306
23333
24361
25391
26422
27454
28487
29521
30556
31592
32630
33669
34709
35750
36792
37835
38880
39926
40973
411021
421070
431120
441172
451225
461279
471334
481390
491447
501506
511566
521627
531689

[1,3,6,10,15,21,28,37,47,58,70,83,97,113,130,148,
 167,187,208,231,255,280,306,333,361,391,422,454,
 487,521,556,592,630,669,709,750,792,835,880,926,
 973,1021,1070,1120,1172,1225,1279,1334,1390,1447,
 1506,1566,1627,1689]