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A074171 as a simple table

na(n)
11
23
30
44
59
615
722
830
939
1049
1160
1272
1385
1499
15114
16130
17147
18165
19184
20204
21225
22247
23270
24294
25319
26345
27372
28400
29429
30459
31490
32522
33555
34589
35624
36660
37697
38735
39774
40814
41855
42897
43940
44984
451029
461075
471122
481170
491219
501269
511320
521372
531425
541479

[1,3,0,4,9,15,22,30,39,49,60,72,85,99,114,130,147,
 165,184,204,225,247,270,294,319,345,372,400,429,
 459,490,522,555,589,624,660,697,735,774,814,855,
 897,940,984,1029,1075,1122,1170,1219,1269,1320,
 1372,1425,1479]