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A154125 as a simple table

na(n)
00
11
22
33
44
55
66
77
88
99
1010
1111
1212
1313
1416
1519
1614
1717
1818
1915
2020
2121
2222
2323
2424
2525
2626
2727
2828
2929
3030
3131
3232
3333
3434
3535
3636
3744
3847
3953
4056
4160
4242
4351
4437
4545
4646
4738
4848
4949
5050
5143
5252
5339
5454
5555
5640
5757
5858
5959
6041
6161
6262
6363
6464
6565
6666
6767
6868
6969
7070
7171

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