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A031492 as a simple table

na(n)
11
22
33
44
55
66
77
810
911
1012
1113
1214
1315
1416
1519
1620
1721
1822
1923
2024
2125
2228
2329
2430
2531
2632
2733
2834
2937
3038
3139
3240
3341
3442
3543
3646
3747
3848
3949
4050
4151
4252
4355
4456
4557
4658
4759
4860
4961
5064
5165
5266
5367
5468
5569
5670
5772
5889
5991
6092
6193
6294
6395

[1,2,3,4,5,6,7,10,11,12,13,14,15,16,19,20,21,22,
 23,24,25,28,29,30,31,32,33,34,37,38,39,40,41,42,
 43,46,47,48,49,50,51,52,55,56,57,58,59,60,61,64,
 65,66,67,68,69,70,72,89,91,92,93,94,95]