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A147965 as a simple table

na(n)
11
21
32
41
54
63
76
85
94
109
116
129
1312
1411
1510
1611
1716
1813
1916
2019
2116
2219
2318
2417
2522
2625
2724
2827
2926
3017
3128
3227
3332
3425
3534
3631
3732
3835
3934
4035
4140
4233
4342
4441
4544
4635
4736
4845
4948
5047
5146
5251
5344
5449
5550
5651
5756
5853
5956
6059

[1,1,2,1,4,3,6,5,4,9,6,9,12,11,10,11,16,13,16,19,
 16,19,18,17,22,25,24,27,26,17,28,27,32,25,34,31,
 32,35,34,35,40,33,42,41,44,35,36,45,48,47,46,51,
 44,49,50,51,56,53,56,59]