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A247942 as a simple table

na(n)
11
22
33
44
59
68
715
814
95
106
117
1210
1321
1416
1525
1612
1735
1818
1949
2020
2127
2222
2339
2411
2513
2624
2755
2826
2933
3028
3145
3232
3351
3438
3517
3619
3730
38119
3936
4065
4134
4257
4340
4463
4544
4669
4750
4823
4942
5085
5146
5275
5352
5481
5556
5687
5762
5829
5931
6048

[1,2,3,4,9,8,15,14,5,6,7,10,21,16,25,12,35,18,49,
 20,27,22,39,11,13,24,55,26,33,28,45,32,51,38,17,
 19,30,119,36,65,34,57,40,63,44,69,50,23,42,85,46,
 75,52,81,56,87,62,29,31,48]