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A081290 as a simple table

na(n)
00
11
22
32
42
55
65
75
85
95
105
115
125
135
1414
1514
1614
1714
1814
1914
2014
2114
2214
2314
2414
2514
2614
2714
2814
2914
3014
3114
3214
3314
3414
3514
3614
3714
3814
3914
4014
4114
4242
4342
4442
4542
4642
4742
4842
4942
5042
5142
5242
5342
5442
5542
5642
5742
5842
5942
6042
6142
6242
6342
6442
6542
6642
6742
6842
6942
7042
7142
7242
7342

[0,1,2,2,2,5,5,5,5,5,5,5,5,5,14,14,14,14,14,14,14,
 14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,14,
 14,14,14,14,14,42,42,42,42,42,42,42,42,42,42,42,
 42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,42,
 42,42,42,42,42]