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A249803 as a simple table

na(n)
13
23
32
43
519
65
713
87
917
1019
1143
1211
13233
1413
1529
1631
1767
1817
1937
2019
2141
2243
23137
2423
25149
26103
2753
28167
29173
3029
3161
3231
33131
3467
35139
3671
3773
3837
39233
4079
41163
4241
43257
4443
4589
46827
47281
4847
4997
50199
51101
52103
53211
5453
55109
56223
57113
58347
59353
6059
611097

[3,3,2,3,19,5,13,7,17,19,43,11,233,13,29,31,67,17,
 37,19,41,43,137,23,149,103,53,167,173,29,61,31,
 131,67,139,71,73,37,233,79,163,41,257,43,89,827,
 281,47,97,199,101,103,211,53,109,223,113,347,353,
 59,1097]