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A166718 as a simple table

na(n)
11
22
33
44
55
66
77
88
99
1010
1111
1212
1313
1414
1515
1616
1717
1818
1919
2020
2121
2222
2323
2424
2525
2626
2727
2828
2929
3030
3131
3233
3334
3435
3536
3637
3738
3839
3940
4041
4142
4243
4344
4445
4546
4647
4749
4850
4951
5052
5153
5254
5355
5456
5557
5658
5759
5860
5961
6062
6163
6265
6366
6467
6568
6669
6770
6871
6973
7074
7175
7276

[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,
 20,21,22,23,24,25,26,27,28,29,30,31,33,34,35,36,
 37,38,39,40,41,42,43,44,45,46,47,49,50,51,52,53,
 54,55,56,57,58,59,60,61,62,63,65,66,67,68,69,70,
 71,73,74,75,76]