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A278963 as a simple table

na(n)
11
21
32
43
54
62
76
86
98
106
1110
127
1312
146
158
1614
1716
1814
1918
2012
2114
2214
2322
2412
2524
2618
2724
2818
2928
3011
3130
3228
3326
3430
3526
3628
3736
3830
3930
4027
4140
4220
4342
4430
4532
4630
4746
4832
4948
5042
5132
5238
5352
5436
5546
5643
5750
5842
5958
6032
6160
6230
6352
6460
6550
6648
6766
6860
6950

[1,1,2,3,4,2,6,6,8,6,10,7,12,6,8,14,16,14,18,12,
 14,14,22,12,24,18,24,18,28,11,30,28,26,30,26,28,
 36,30,30,27,40,20,42,30,32,30,46,32,48,42,32,38,
 52,36,46,43,50,42,58,32,60,30,52,60,50,48,66,60,
 50]