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A218608 as a simple table

na(n)
00
11
22
34
46
57
69
710
812
914
1015
1121
1223
1324
1438
1540
1641
1761
1862
1963
2064
2168
2270
2371
2491
2592
2693
2794
28104
29105
30106
31107
32113
33122
34124
35125
36145
37146
38147
39148
40158
41159
42160
43161
44167
45182
46183
47184
48185
49191
50202
51220
52222
53223
54243
55244
56245
57246
58256

[0,1,2,4,6,7,9,10,12,14,15,21,23,24,38,40,41,61,
 62,63,64,68,70,71,91,92,93,94,104,105,106,107,113,
 122,124,125,145,146,147,148,158,159,160,161,167,
 182,183,184,185,191,202,220,222,223,243,244,245,
 246,256]