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A066248 as a simple table

na(n)
12
24
31
46
53
68
75
87
99
1010
1111
1212
1313
1415
1517
1614
1719
1816
1921
2023
2125
2218
2327
2429
2531
2633
2735
2820
2937
3022
3139
3241
3343
3445
3547
3624
3749
3851
3953
4026
4155
4228
4357
4459
4561
4630
4763
4865
4967
5069
5171
5232
5373
5475
5577
5679
5781
5834
5983
6036
6185
6287
6389
6491
6593
6638
6795
6897
6999
7040
71101
7242

[2,4,1,6,3,8,5,7,9,10,11,12,13,15,17,14,19,16,21,
 23,25,18,27,29,31,33,35,20,37,22,39,41,43,45,47,
 24,49,51,53,26,55,28,57,59,61,30,63,65,67,69,71,
 32,73,75,77,79,81,34,83,36,85,87,89,91,93,38,95,
 97,99,40,101,42]