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A138538 as a simple table

na(n)
00
11
22
33
45
56
69
715
816
918
1019
1120
1227
1338
1445
1547
1648
1754
1857
1960
2081
2197
22104
23114
24135
25139
26141
27142
28144
29162
30171
31178
32180
33181
34243
35291
36298
37312
38335
39342
40405
41416
42417
43423
44426
45432
46486
47497
48506
49508
50513
51518
52524
53534
54540
55543
56590
57628
58729

[0,1,2,3,5,6,9,15,16,18,19,20,27,38,45,47,48,54,
 57,60,81,97,104,114,135,139,141,142,144,162,171,
 178,180,181,243,291,298,312,335,342,405,416,417,
 423,426,432,486,497,506,508,513,518,524,534,540,
 543,590,628,729]