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A345967 as a simple table

na(n)
12
21
35
43
56
64
77
88
912
109
1111
1210
1315
1413
1517
1614
1716
1818
1922
2019
2121
2220
2325
2423
2526
2624
2728
2827
2930
3029
3132
3231
3335
3433
3536
3634
3737
3838
3942
4039
4143
4240
4344
4441
4545
4647
4746
4848
4955
5049
5151
5250
5353
5452
5557
5654
5756
5858
5962
6059
6163
6260
6364
6461
6565
6667
6766
6868
6974
7069
7172
7270
7375
7471
7573
7676
7779
7877
7980
8078

[2,1,5,3,6,4,7,8,12,9,11,10,15,13,17,14,16,18,22,
 19,21,20,25,23,26,24,28,27,30,29,32,31,35,33,36,
 34,37,38,42,39,43,40,44,41,45,47,46,48,55,49,51,
 50,53,52,57,54,56,58,62,59,63,60,64,61,65,67,66,
 68,74,69,72,70,75,71,73,76,79,77,80,78]