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A131150 as a simple table

na(n)
00
11
22
33
44
55
68
76
87
99
1010
1112
1213
1311
1421
1522
1619
1714
1815
1920
2016
2117
2218
2323
2424
2525
2626
2727
2831
2932
3034
3135
3236
3330
3433
3528
3629
3758
3859
3964
4062
4163
4256
4360
4451
4537
4638
4752
4841
4939
5040
5157
5261
5353
5442
5543
5654
5744
5845
5946
6055
6147
6248
6349
6450
6565
6666
6769
6867
6968
7070
7171

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