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A237341 as a simple table

na(n)
00
11
22
33
44
516
617
718
819
920
1021
1122
1223
1324
14216
15217
16218
17219
18220
19221
20222
21223
22224
232216
242217
252218
262219
272220
282221
292222
302223
312224
3222216
3322217
3422218
3522219
3622220
3722221
3822222
3922223
4022224
41222216
42222217
43222218
44222219
45222220
46222221

[0,1,2,3,4,16,17,18,19,20,21,22,23,24,216,217,218,
 219,220,221,222,223,224,2216,2217,2218,2219,2220,
 2221,2222,2223,2224,22216,22217,22218,22219,22220,
 22221,22222,22223,22224,222216,222217,222218,
 222219,222220,222221]