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A127521 as a simple table

na(n)
11
22
33
45
54
67
79
86
910
1012
1114
1216
138
1413
1517
1619
1711
1818
1921
2023
2125
2227
2329
2415
2522
2626
2730
2832
2934
3036
3138
3240
3320
3428
3533
3637
3741
3843
3924
4035
4142
4245
4347
4449
4551
4653
4755
4857
4931
5044
5148
5252
5356
5459
5561
5663
5765
5867
5969
6071
6139
6250
6358
6462
6566
6670
6773
6875
6977
7079
7181
7283

[1,2,3,5,4,7,9,6,10,12,14,16,8,13,17,19,11,18,21,
 23,25,27,29,15,22,26,30,32,34,36,38,40,20,28,33,
 37,41,43,24,35,42,45,47,49,51,53,55,57,31,44,48,
 52,56,59,61,63,65,67,69,71,39,50,58,62,66,70,73,
 75,77,79,81,83]