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A291166 as a simple table

na(n)
11
23
35
46
57
69
711
812
913
1014
1115
1217
1318
1419
1520
1621
1722
1823
1924
2025
2126
2227
2328
2429
2530
2631
2733
2835
2937
3038
3139
3241
3343
3444
3545
3646
3747
3848
3949
4050
4151
4252
4353
4454
4555
4656
4757
4858
4959
5060
5161
5262
5363
5465
5566
5667
5768
5869
5970
6071
6172
6273
6374
6475
6576
6677
6778
6879
6980
7081

[1,3,5,6,7,9,11,12,13,14,15,17,18,19,20,21,22,23,
 24,25,26,27,28,29,30,31,33,35,37,38,39,41,43,44,
 45,46,47,48,49,50,51,52,53,54,55,56,57,58,59,60,
 61,62,63,65,66,67,68,69,70,71,72,73,74,75,76,77,
 78,79,80,81]