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A248387 as a simple table

na(n)
11
22
34
45
58
69
710
811
912
1014
1116
1217
1318
1419
1520
1621
1722
1823
1924
2025
2126
2229
2330
2433
2534
2635
2736
2837
2938
3039
3141
3242
3343
3444
3545
3646
3747
3848
3949
4051
4152
4253
4354
4456
4558
4659
4760
4861
4962
5064
5166
5267
5368
5469
5570
5671
5772
5873
5974
6075
6176
6277
6378
6479
6580
6681

[1,2,4,5,8,9,10,11,12,14,16,17,18,19,20,21,22,23,
 24,25,26,29,30,33,34,35,36,37,38,39,41,42,43,44,
 45,46,47,48,49,51,52,53,54,56,58,59,60,61,62,64,
 66,67,68,69,70,71,72,73,74,75,76,77,78,79,80,81]