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A084577 as a simple table

na(n)
12
24
35
47
59
610
711
812
914
1016
1116
1217
1319
1421
1521
1623
1724
1824
1926
2028
2129
2231
2332
2433
2533
2633
2735
2836
2938
3040
3141
3242
3343
3444
3545
3647
3748
3849
3950
4050
4152
4253
4353
4455
4555
4657
4758
4860
4962
5064
5164
5265
5367
5467
5567
5668
5769
5870
5972
6073
6174
6275
6376
6477
6579
6681
6782
6883
6984
7084
7185

[2,4,5,7,9,10,11,12,14,16,16,17,19,21,21,23,24,24,
 26,28,29,31,32,33,33,33,35,36,38,40,41,42,43,44,
 45,47,48,49,50,50,52,53,53,55,55,57,58,60,62,64,
 64,65,67,67,67,68,69,70,72,73,74,75,76,77,79,81,
 82,83,84,84,85]