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A093870 as a simple table

na(n)
12
23
35
42
55
611
73
87
911
1019
1119
1229
1359
1479
1589
165
1711
1817
1923
2029
2141
2213
2341
2483
2597
26139
27167
28181
297
3023
3131
3247
3371
3479
35103
36127
3717
3853
3971
4089
41107
42179
43197
44233
45251
4619
4729
4859
4979
5089
51109
52139
53149
54179
55199
5643
57109
58131
59197
60241
61263
62307
63373
64439
65461
66571

[2,3,5,2,5,11,3,7,11,19,19,29,59,79,89,5,11,17,23,
 29,41,13,41,83,97,139,167,181,7,23,31,47,71,79,
 103,127,17,53,71,89,107,179,197,233,251,19,29,59,
 79,89,109,139,149,179,199,43,109,131,197,241,263,
 307,373,439,461,571]