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A026242 as a simple table

na(n)
11
21
32
43
52
64
73
85
96
104
117
128
135
149
156
1610
1711
187
1912
208
2113
2214
239
2415
2516
2610
2717
2811
2918
3019
3112
3220
3321
3413
3522
3614
3723
3824
3915
4025
4116
4226
4327
4417
4528
4629
4718
4830
4919
5031
5132
5220
5333
5421
5534
5635
5722
5836
5937
6023
6138
6224
6339
6440
6525
6641

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