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A166937 as a simple table

na(n)
11
22
33
45
56
67
79
810
911
1012
1113
1214
1315
1417
1518
1619
1720
1821
1923
2025
2126
2227
2328
2429
2530
2631
2733
2834
2935
3037
3138
3239
3340
3441
3542
3643
3745
3847
3949
4050
4151
4252
4353
4454
4555
4656
4757
4858
4959
5060
5161
5262
5363
5465
5566
5667
5768
5869
5970
6071
6173
6275
6377
6479
6581
6683
6784
6885
6986
7087
7189
7290

[1,2,3,5,6,7,9,10,11,12,13,14,15,17,18,19,20,21,
 23,25,26,27,28,29,30,31,33,34,35,37,38,39,40,41,
 42,43,45,47,49,50,51,52,53,54,55,56,57,58,59,60,
 61,62,63,65,66,67,68,69,70,71,73,75,77,79,81,83,
 84,85,86,87,89,90]