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A130988 as a simple table

na(n)
00
11
22
33
44
55
67
76
88
99
1010
1111
1212
1313
1417
1518
1616
1714
1815
1921
2019
2120
2222
2323
2424
2526
2625
2727
2828
2929
3030
3131
3232
3333
3435
3534
3636
3745
3846
3949
4048
4150
4244
4347
4442
4537
4638
4743
4840
4939
5041
5158
5259
5356
5451
5552
5657
5753
5854
5955
6063
6160
6261
6362
6464
6565
6666
6767
6868
6969
7073
7174

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