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A003978 as a simple table

na(n)
11
21
32
42
54
62
76
84
96
104
1110
124
1314
146
158
168
1721
186
1929
208
2112
2210
2341
248
2520
2614
2718
2812
2955
308
3176
3216
3320
3421
3524
3612
37100
3829
3928
4016
41134
4212
43175
4420
4524
4641
47230
4816
4942
5020
5142
5228
53296
5418
5540
5624
5758
5855
59384
6016
61489
6276
6336
6432
6556
6620
67626
6842
6982
7024
71791
7224

[1,1,2,2,4,2,6,4,6,4,10,4,14,6,8,8,21,6,29,8,12,
 10,41,8,20,14,18,12,55,8,76,16,20,21,24,12,100,29,
 28,16,134,12,175,20,24,41,230,16,42,20,42,28,296,
 18,40,24,58,55,384,16,489,76,36,32,56,20,626,42,
 82,24,791,24]