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A206718 as a simple table

na(n)
11
22
33
44
55
66
77
88
99
1010
1112
1214
1316
1417
1518
1619
1720
1823
1924
2025
2127
2228
2332
2433
2534
2635
2736
2837
2938
3039
3140
3241
3345
3446
3548
3649
3750
3853
3954
4055
4156
4257
4359
4461
4563
4664
4765
4866
4967
5068
5169
5270
5371
5472
5573
5674
5776
5878
5980
6081
6182
6290
6392
6496
6597
6698
6799
68100
69106

[1,2,3,4,5,6,7,8,9,10,12,14,16,17,18,19,20,23,24,
 25,27,28,32,33,34,35,36,37,38,39,40,41,45,46,48,
 49,50,53,54,55,56,57,59,61,63,64,65,66,67,68,69,
 70,71,72,73,74,76,78,80,81,82,90,92,96,97,98,99,
 100,106]