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A025745 as a simple table

na(n)
11
23
36
410
515
621
729
838
948
1059
1171
1285
13100
14116
15133
16151
17170
18191
19213
20236
21260
22285
23312
24340
25369
26399
27430
28462
29496
30531
31567
32604
33642
34682
35723
36765
37808
38852
39897
40944
41992
421041
431091
441142
451195
461249
471304
481360
491417
501475
511535
521596
531658

[1,3,6,10,15,21,29,38,48,59,71,85,100,116,133,151,
 170,191,213,236,260,285,312,340,369,399,430,462,
 496,531,567,604,642,682,723,765,808,852,897,944,
 992,1041,1091,1142,1195,1249,1304,1360,1417,1475,
 1535,1596,1658]