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A118028 as a simple table

na(n)
01
13
25
39
413
519
625
732
840
950
1060
1171
1283
1397
14111
15126
16142
17159
18177
19197
20217
21238
22260
23283
24307
25333
26359
27386
28414
29443
30473
31504
32537
33570
34604
35639
36675
37712
38750
39789
40830
41871
42913
43956
441000
451045
461091
471138
481186
491235
501286
511337
521389
531442

[1,3,5,9,13,19,25,32,40,50,60,71,83,97,111,126,
 142,159,177,197,217,238,260,283,307,333,359,386,
 414,443,473,504,537,570,604,639,675,712,750,789,
 830,871,913,956,1000,1045,1091,1138,1186,1235,
 1286,1337,1389,1442]