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A161960 as a simple table

na(n)
21
32
43
53
611
715
89
911
105
116
1217
131
1411
158
169
1761
1811
199
2039
2185
2223
2311
2435
2538
2661
2743
28137
2973
3077
31162
3243
33181
34191
3540
3635
3773
381
3920
40251
41263
42137
43283
44295
4517
46319
477
4819
4917
50367
5142
52131
53409
54421
55217
56445
57457
58237
59487
60503
61173
62133
6361
6447
65289
661
67609
68156

[1,2,3,3,11,15,9,11,5,6,17,1,11,8,9,61,11,9,39,85,
 23,11,35,38,61,43,137,73,77,162,43,181,191,40,35,
 73,1,20,251,263,137,283,295,17,319,7,19,17,367,42,
 131,409,421,217,445,457,237,487,503,173,133,61,47,
 289,1,609,156]