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A027883 as a simple table

na(n)
11
22
34
45
58
69
711
812
913
1016
1117
1219
1320
1421
1522
1624
1725
1826
1928
2029
2130
2231
2333
2434
2535
2636
2737
2838
2939
3040
3143
3245
3346
3447
3548
3649
3750
3851
3952
4054
4155
4256
4357
4458
4559
4660
4761
4862
4963
5064
5165
5266
5367
5469
5571
5672
5773
5874
5975
6076
6177
6279
6380
6481
6582
6683
6784
6885
6987
7088
7189

[1,2,4,5,8,9,11,12,13,16,17,19,20,21,22,24,25,26,
 28,29,30,31,33,34,35,36,37,38,39,40,43,45,46,47,
 48,49,50,51,52,54,55,56,57,58,59,60,61,62,63,64,
 65,66,67,69,71,72,73,74,75,76,77,79,80,81,82,83,
 84,85,87,88,89]