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A180711 as a simple table

na(n)
01
11
21
32
43
54
65
76
87
99
1011
1112
1215
1317
1419
1522
1625
1728
1832
1935
2039
2144
2248
2353
2458
2564
2670
2776
2883
2990
3097
31105
32113
33122
34131
35140
36150
37161
38172
39183
40195
41208
42221
43235
44249
45264
46280
47296
48313
49331
50349
51368
52387
53408
54429
55451
56474
57497
58522
59547
60573
61600

[1,1,1,2,3,4,5,6,7,9,11,12,15,17,19,22,25,28,32,
 35,39,44,48,53,58,64,70,76,83,90,97,105,113,122,
 131,140,150,161,172,183,195,208,221,235,249,264,
 280,296,313,331,349,368,387,408,429,451,474,497,
 522,547,573,600]