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A038506 as a simple table

na(n)
11
22
33
44
55
66
77
88
99
102
113
124
135
146
157
168
179
1810
1911
205
216
227
238
249
2510
2611
2712
2813
2914
308
319
3210
3311
3412
3513
3614
3715
3816
3917
4010
4111
4212
4313
4414
4515
4616
4717
4818
4919
5013
5114
5215
5316
5417
5518
5619
5720
5821
5922
6016
6117
6218
6319
6420
6521
6622
6723
6824
6925
7019
7120
7221
7322
7423
7524
7625
7726

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