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A026516 as a simple table

na(n)
11
22
34
46
57
69
710
811
912
1014
1115
1216
1317
1418
1519
1621
1722
1823
1924
2026
2127
2228
2329
2430
2531
2633
2734
2835
2936
3037
3138
3239
3342
3443
3544
3646
3747
3848
3949
4050
4151
4254
4355
4456
4557
4659
4760
4862
4963
5064
5166
5267
5368
5469
5570
5671
5773
5875
5976
6077
6178
6279
6381
6482
6583
6684
6786
6887
6988
7089

[1,2,4,6,7,9,10,11,12,14,15,16,17,18,19,21,22,23,
 24,26,27,28,29,30,31,33,34,35,36,37,38,39,42,43,
 44,46,47,48,49,50,51,54,55,56,57,59,60,62,63,64,
 66,67,68,69,70,71,73,75,76,77,78,79,81,82,83,84,
 86,87,88,89]