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A264974 as a simple table

na(n)
00
11
22
33
44
55
66
77
816
99
1010
1119
1212
1313
1414
1515
168
1717
1818
1911
2020
2121
2234
2343
2448
2525
2652
2727
2828
2955
3030
3137
3246
3357
3422
3549
3636
3731
3858
3939
4040
4141
4242
4323
4450
4545
4632
4759
4824
4935
5044
5151
5226
5353
5454
5529
5656
5733
5838
5947
6060
6161
62142
6363
6488
65169
66102
67115
68124
69129
7070
71151
72144
7397
74178
7575
76106
77133
78156
7979
80160
8181

[0,1,2,3,4,5,6,7,16,9,10,19,12,13,14,15,8,17,18,
 11,20,21,34,43,48,25,52,27,28,55,30,37,46,57,22,
 49,36,31,58,39,40,41,42,23,50,45,32,59,24,35,44,
 51,26,53,54,29,56,33,38,47,60,61,142,63,88,169,
 102,115,124,129,70,151,144,97,178,75,106,133,156,
 79,160,81]