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A030066 as a simple table

na(n)
00
11
22
33
44
55
66
77
88
99
1010
1111
1212
1313
1414
1515
1616
1717
1818
1919
2020
2120
221
2320
242
2520
263
2720
284
2920
305
3120
326
3320
347
3520
368
3720
389
3930
4030
411
4230
432
4430
453
4630
474
4830
495
5030
516
5230
537
5430
558
5630
579
5840
5940
601
6140
622
6340
643
6540
664
6740
685
6940
706
7140
727
7340
748
7540
769
7750
7850
791
8050

[0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,
 19,20,20,1,20,2,20,3,20,4,20,5,20,6,20,7,20,8,20,
 9,30,30,1,30,2,30,3,30,4,30,5,30,6,30,7,30,8,30,9,
 40,40,1,40,2,40,3,40,4,40,5,40,6,40,7,40,8,40,9,
 50,50,1,50]