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A075077 as a simple table

na(n)
11
23
35
44
52
68
76
89
97
1011
1110
1212
1313
1414
1516
1617
1715
1819
1920
2018
2122
2223
2321
2425
2524
2626
2728
2827
2929
3031
3132
3230
3334
3435
3533
3637
3738
3836
3940
4041
4139
4243
4342
4444
4546
4645
4747
4848
4950
5049
5151
5253
5352
5454
5556
5655
5757
5858
5959
6060
6161
6262
6363
6465
6564
6666
6767
6868
6970
7071
7169
7273

[1,3,5,4,2,8,6,9,7,11,10,12,13,14,16,17,15,19,20,
 18,22,23,21,25,24,26,28,27,29,31,32,30,34,35,33,
 37,38,36,40,41,39,43,42,44,46,45,47,48,50,49,51,
 53,52,54,56,55,57,58,59,60,61,62,63,65,64,66,67,
 68,70,71,69,73]