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A271860 as a simple table

na(n)
00
11
20
33
40
53
62
75
80
95
104
117
122
135
144
1511
164
177
186
199
204
2111
2210
2313
244
259
268
2715
2810
2913
3012
3115
326
3313
3412
3519
3612
3715
3814
3921
4012
4115
4214
4317
4412
4523
4622
4725
4812
4917
5016
5123
5218
5321
5420
5527
5618
5725
5824
5927
6018
6121
6220
6331
6420
6527
6626
6729
6824
6931
7030

[0,1,0,3,0,3,2,5,0,5,4,7,2,5,4,11,4,7,6,9,4,11,10,
 13,4,9,8,15,10,13,12,15,6,13,12,19,12,15,14,21,12,
 15,14,17,12,23,22,25,12,17,16,23,18,21,20,27,18,
 25,24,27,18,21,20,31,20,27,26,29,24,31,30]