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A331280 as a simple table

na(n)
11
22
33
42
54
63
75
82
96
104
117
123
138
145
159
162
1710
186
1911
204
2112
227
2313
243
259
268
276
285
2914
309
3115
322
3316
3410
3517
366
3718
3811
3919
404
4120
4212
4321
447
459
4613
4722
483
4912
509
5123
528
5324
546
5525
565
5726
5814
5927
609
6128
6215
6312
642
6529
6616
6730
6810
6931
7017
7132
726
7333
7418
7534
7611
7725
7819
7935
804
816
8220
8336
8412
8537
8621
8738
887
8939
909
9140
9213
9341
9422
9542
963
9743
9812
9916
1009
10144
10223
10345
1048
10546

[1,2,3,2,4,3,5,2,6,4,7,3,8,5,9,2,10,6,11,4,12,7,
 13,3,9,8,6,5,14,9,15,2,16,10,17,6,18,11,19,4,20,
 12,21,7,9,13,22,3,12,9,23,8,24,6,25,5,26,14,27,9,
 28,15,12,2,29,16,30,10,31,17,32,6,33,18,34,11,25,
 19,35,4,6,20,36,12,37,21,38,7,39,9,40,13,41,22,42,
 3,43,12,16,9,44,23,45,8,46]