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A003980 as a simple table

na(n)
11
21
32
42
54
62
77
84
96
104
1112
124
1320
147
158
168
1733
186
1954
208
2114
2212
2388
248
2520
2620
2718
2814
29143
308
31232
3216
3324
3433
3528
3612
37376
3854
3940
4016
41609
4214
43986
4424
4524
4688
471596
4816
4956
5020
5166
5240
532583
5418
5548
5628
57108
58143
594180
6016
616764
62232
6342
6432
6580
6624
6710945
6866

[1,1,2,2,4,2,7,4,6,4,12,4,20,7,8,8,33,6,54,8,14,
 12,88,8,20,20,18,14,143,8,232,16,24,33,28,12,376,
 54,40,16,609,14,986,24,24,88,1596,16,56,20,66,40,
 2583,18,48,28,108,143,4180,16,6764,232,42,32,80,
 24,10945,66]