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A331266 as a simple table

na(n)
11
22
33
44
55
65
76
87
98
109
119
1210
139
1410
1511
1611
1712
1811
1913
2013
2114
2215
2316
2417
2517
2618
2717
2818
2919
3019
3120
3217
3319
3418
3521
3621
3719
3820
3922
4019
4121
4223
4319
4421
4522
4622
4724
4821
4922
5023
5125
5225
5323
5426
5523
5625
5726
5827
5927
6028
6127
6229
6329
6430
6531
6632
6733
6833

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