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A273058 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
3232
3333
3434
3535
3637
3738
3839
3940
4041
4142
4243
4344
4445
4546
4647
4748
4849
4950
5051
5152
5253
5354
5455
5556
5657
5758
5859
5960
6061
6162
6263
6364
6465
6566
6667
6768
6869
6970

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