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A286045 as a simple table

na(n)
11
22
34
45
56
67
79
810
912
1013
1115
1216
1317
1418
1520
1621
1722
1823
1925
2026
2127
2228
2330
2431
2533
2634
2736
2837
2938
3039
3141
3242
3344
3445
3547
3648
3749
3850
3952
4053
4155
4256
4358
4459
4560
4661
4763
4864
4965
5066
5168
5269
5370
5471
5573
5674
5776
5877
5979
6080
6181
6282
6384
6485
6586
6687

[1,2,4,5,6,7,9,10,12,13,15,16,17,18,20,21,22,23,
 25,26,27,28,30,31,33,34,36,37,38,39,41,42,44,45,
 47,48,49,50,52,53,55,56,58,59,60,61,63,64,65,66,
 68,69,70,71,73,74,76,77,79,80,81,82,84,85,86,87]