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A047380 as a simple table

na(n)
11
22
34
45
58
69
711
812
915
1016
1118
1219
1322
1423
1525
1626
1729
1830
1932
2033
2136
2237
2339
2440
2543
2644
2746
2847
2950
3051
3153
3254
3357
3458
3560
3661
3764
3865
3967
4068
4171
4272
4374
4475
4578
4679
4781
4882
4985
5086
5188
5289
5392
5493
5595
5696
5799
58100
59102
60103
61106
62107
63109
64110

[1,2,4,5,8,9,11,12,15,16,18,19,22,23,25,26,29,30,
 32,33,36,37,39,40,43,44,46,47,50,51,53,54,57,58,
 60,61,64,65,67,68,71,72,74,75,78,79,81,82,85,86,
 88,89,92,93,95,96,99,100,102,103,106,107,109,110]