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A239216 as a simple table

na(n)
11
22
33
44
55
66
77
88
99
1012
1113
1214
1315
1416
1517
1618
1719
1823
1924
2025
2126
2227
2328
2429
2534
2635
2736
2837
2938
3039
3145
3246
3347
3448
3549
3656
3757
3858
3959
4067
4168
4269
4378
4479
4589
46120
4710
4811
4920
5021
5122
5230
5331
5432
5533
5640
5741
5842
5943
6044
6150
6251
6352
6453
6554
6655
6760

[1,2,3,4,5,6,7,8,9,12,13,14,15,16,17,18,19,23,24,
 25,26,27,28,29,34,35,36,37,38,39,45,46,47,48,49,
 56,57,58,59,67,68,69,78,79,89,120,10,11,20,21,22,
 30,31,32,33,40,41,42,43,44,50,51,52,53,54,55,60]