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A054847 as a simple table

na(n)
00
11
23
33
45
55
65
78
88
98
1011
1111
1211
1315
1415
1515
1615
1719
1819
1919
2019
2123
2223
2323
2423
2527
2627
2727
2827
2927
3032
3132
3232
3332
3432
3536
3636
3736
3836
3942
4042
4142
4242
4342
4442
4547
4647
4747
4847
4947
5052
5152
5252
5352
5452
5552
5658
5758
5858
5958
6058
6158
6264
6364
6464
6564
6664
6764
6870
6970
7070
7170

[0,1,3,3,5,5,5,8,8,8,11,11,11,15,15,15,15,19,19,
 19,19,23,23,23,23,27,27,27,27,27,32,32,32,32,32,
 36,36,36,36,42,42,42,42,42,42,47,47,47,47,47,52,
 52,52,52,52,52,58,58,58,58,58,58,64,64,64,64,64,
 64,70,70,70,70]