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A253587 as a simple table

na(n)
00
12
21
31
40
52
66
78
87
93
108
117
126
135
144
157
166
178
184
193
205
213
225
234
240
252
261
276
285
294
303
312
321
330
348
357
364
373
385
391
400
412
427
436
448
4518
4620
4719
4824
4926
5025
5121
5223
5322
549
5520
5619
5718
5826
5925
6024
6123
6222
6321
6411
6510
6619
6718
6820
6925
7024
7126
7222
7321
7423
7510
769
7711

[0,2,1,1,0,2,6,8,7,3,8,7,6,5,4,7,6,8,4,3,5,3,5,4,
 0,2,1,6,5,4,3,2,1,0,8,7,4,3,5,1,0,2,7,6,8,18,20,
 19,24,26,25,21,23,22,9,20,19,18,26,25,24,23,22,21,
 11,10,19,18,20,25,24,26,22,21,23,10,9,11]