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A130938 as a simple table

na(n)
00
11
22
33
44
55
67
78
86
99
1010
1112
1213
1311
1417
1518
1620
1721
1822
1916
2014
2115
2219
2323
2424
2526
2627
2725
2831
2932
3034
3135
3236
3330
3428
3529
3633
3745
3846
3948
4049
4150
4254
4355
4457
4558
4659
4761
4862
4963
5064
5144
5247
5342
5437
5538
5643
5740
5841
5939
6053
6151
6256
6360
6452
6565
6666
6768
6869
6967
7073
7174

[0,1,2,3,4,5,7,8,6,9,10,12,13,11,17,18,20,21,22,
 16,14,15,19,23,24,26,27,25,31,32,34,35,36,30,28,
 29,33,45,46,48,49,50,54,55,57,58,59,61,62,63,64,
 44,47,42,37,38,43,40,41,39,53,51,56,60,52,65,66,
 68,69,67,73,74]