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A072796 as a simple table

na(n)
00
11
22
33
44
56
65
77
88
99
1010
1114
1216
1319
1411
1515
1612
1717
1818
1913
2020
2121
2222
2323
2424
2525
2626
2727
2837
2938
3042
3144
3247
3351
3453
3556
3660
3728
3829
3939
4043
4152
4230
4340
4431
4545
4646
4732
4848
4949
5050
5133
5241
5334
5454
5555
5635
5757
5858
5959
6036
6161
6262
6363
6464
6565
6666
6767
6868
6969
7070
7171

[0,1,2,3,4,6,5,7,8,9,10,14,16,19,11,15,12,17,18,
 13,20,21,22,23,24,25,26,27,37,38,42,44,47,51,53,
 56,60,28,29,39,43,52,30,40,31,45,46,32,48,49,50,
 33,41,34,54,55,35,57,58,59,36,61,62,63,64,65,66,
 67,68,69,70,71]