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A026408 as a simple table

na(n)
11
22
32
43
55
64
75
86
97
108
116
128
1311
1414
1513
1611
1713
1811
1917
2013
2118
2220
2323
2417
2520
2626
2724
2825
2927
3028
3125
3221
3328
3427
3535
3630
3737
3824
3926
4037
4134
4239
4341
4439
4536
4622
4726
4848
4946
5047
5148
5233
5334
5452
5546
5631
5732
5838
5959
6050
6136
6231
6333
6455
6564
6666
6767
6868
6965
7058
7159
7272
7365

[1,2,2,3,5,4,5,6,7,8,6,8,11,14,13,11,13,11,17,13,
 18,20,23,17,20,26,24,25,27,28,25,21,28,27,35,30,
 37,24,26,37,34,39,41,39,36,22,26,48,46,47,48,33,
 34,52,46,31,32,38,59,50,36,31,33,55,64,66,67,68,
 65,58,59,72,65]