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A280505 as a simple table

na(n)
11
22
33
44
55
66
77
88
99
1010
111
1212
131
1414
1515
1616
1717
1818
191
2020
2121
222
233
2424
251
262
2727
2828
293
3030
3131
3232
3333
3434
357
3636
371
382
395
4040
411
4242
433
444
4545
466
471
4848
497
502
5151
524
533
5454
551
5656
575
586
591
6060
611
6262
6363
6464
6565
6666
671
6868
691
7014
713
7272
7373
742
7515
764
773
7810
797
8080
811
822
839
8484
8585
866
871
888
893
9090
911
9212
9393
942
955
9696
971
9814
9999
1004
1019
102102
1031
1048
10515
1066

[1,2,3,4,5,6,7,8,9,10,1,12,1,14,15,16,17,18,1,20,
 21,2,3,24,1,2,27,28,3,30,31,32,33,34,7,36,1,2,5,
 40,1,42,3,4,45,6,1,48,7,2,51,4,3,54,1,56,5,6,1,60,
 1,62,63,64,65,66,1,68,1,14,3,72,73,2,15,4,3,10,7,
 80,1,2,9,84,85,6,1,8,3,90,1,12,93,2,5,96,1,14,99,
 4,9,102,1,8,15,6]