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A049989 as a simple table

na(n)
11
23
36
410
514
621
726
833
942
1051
1158
1272
1380
1491
15107
16120
17130
18150
19161
20178
21199
22215
23228
24255
25272
26290
27316
28338
29354
30389
31406
32429
33460
34483
35508
36549
37569
38594
39630
40663
41685
42731
43754
44785
45833
46863
47888
48940
49969
501007
511054
521090
531118
541175
551212
561253
571305
581342
591373
601444
611476
621515
631577
641621

[1,3,6,10,14,21,26,33,42,51,58,72,80,91,107,120,
 130,150,161,178,199,215,228,255,272,290,316,338,
 354,389,406,429,460,483,508,549,569,594,630,663,
 685,731,754,785,833,863,888,940,969,1007,1054,
 1090,1118,1175,1212,1253,1305,1342,1373,1444,1476,
 1515,1577,1621]