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A160811 as a simple table

na(n)
15
27
39
410
511
613
714
815
916
1017
1118
1219
1320
1421
1522
1623
1725
1826
1927
2028
2129
2230
2331
2432
2533
2634
2735
2836
2937
3038
3139
3240
3341
3442
3543
3644
3745
3846
3947
4048
4149
4250
4351
4452
4553
4654
4755
4856
4957
5058
5159
5260
5361
5462
5563
5664
5765
5866
5967
6068
6169
6270
6371
6472
6573
6674
6775
6876
6977

[5,7,9,10,11,13,14,15,16,17,18,19,20,21,22,23,25,
 26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,
 42,43,44,45,46,47,48,49,50,51,52,53,54,55,56,57,
 58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,
 74,75,76,77]