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A072028 as a simple table

na(n)
11
22
33
44
57
66
75
88
99
1014
1111
1212
1313
1410
1521
1616
1719
1818
1917
2028
2115
2222
2323
2424
2549
2626
2727
2820
2931
3042
3129
3232
3333
3438
3535
3636
3737
3834
3939
4056
4143
4230
4341
4444
4563
4646
4747
4848
4925
5098
5157
5252
5353
5454
5577
5640
5751
5862
5959
6084
6161
6258
6345
6464
6591
6666

[1,2,3,4,7,6,5,8,9,14,11,12,13,10,21,16,19,18,17,
 28,15,22,23,24,49,26,27,20,31,42,29,32,33,38,35,
 36,37,34,39,56,43,30,41,44,63,46,47,48,25,98,57,
 52,53,54,77,40,51,62,59,84,61,58,45,64,91,66]