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A331268 as a simple table

na(n)
11
22
33
44
55
65
76
87
98
109
1110
1210
1311
1412
1511
1613
1714
1811
1914
2015
2111
2216
2315
2417
2514
2615
2718
2816
2919
3017
3119
3220
3317
3421
3520
3622
3723
3823
3924
4025
4126
4227
4328
4428
4529
4630
4729
4831
4928
5032
5130
5232
5333
5431
5534
5631
5732
5835
5934
6036
6129
6232
6337
6434
6537
6638
6732
6833

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