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A261231 as a simple table

na(n)
00
11
21
32
42
52
63
73
83
94
104
114
125
135
145
156
166
176
187
197
207
218
228
238
248
258
268
279
289
299
3010
3110
3210
3311
3411
3511
3612
3712
3812
3913
4013
4113
4213
4313
4413
4514
4614
4714
4814
4914
5014
5115
5215
5315
5416
5516
5616
5717
5817
5917
6017
6117
6217
6318
6418
6518
6618
6718
6818
6919
7019
7119
7219
7319
7419
7520
7620
7720
7820
7920
8020
8121
8221
8321
8422
8522
8622
8723
8823
8923
9024
9124
9224

[0,1,1,2,2,2,3,3,3,4,4,4,5,5,5,6,6,6,7,7,7,8,8,8,
 8,8,8,9,9,9,10,10,10,11,11,11,12,12,12,13,13,13,
 13,13,13,14,14,14,14,14,14,15,15,15,16,16,16,17,
 17,17,17,17,17,18,18,18,18,18,18,19,19,19,19,19,
 19,20,20,20,20,20,20,21,21,21,22,22,22,23,23,23,
 24,24,24]