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A066251 as a simple table

na(n)
11
23
32
45
54
67
76
88
910
109
1112
1211
1316
1413
1518
1614
1722
1815
1928
2017
2130
2219
2336
2420
2540
2621
2742
2823
2946
3024
3152
3225
3358
3426
3560
3627
3766
3829
3970
4031
4172
4232
4378
4433
4582
4634
4788
4835
4996
5037
51100
5238
53102
5439
55106
5641
57108
5843
59112
6044
61126
6245
63130
6447
65136
6648
67138
6849
69148

[1,3,2,5,4,7,6,8,10,9,12,11,16,13,18,14,22,15,28,
 17,30,19,36,20,40,21,42,23,46,24,52,25,58,26,60,
 27,66,29,70,31,72,32,78,33,82,34,88,35,96,37,100,
 38,102,39,106,41,108,43,112,44,126,45,130,47,136,
 48,138,49,148]