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A214686 as a simple table

na(n)
21
31
47
51
623
71
847
91
1079
111
12113
1389
1423
1573
1631
171
18283
1989
20113
21139
22173
2367
2447
251
26619
27131
28109
2983
30113
31211
32191
331
341087
351
361223
371
381367
391
401511
41367
4283
431
441847
451
462017
47317
48571
49241
50199
511
522593
53367
54211
55271
56223
571
583229
591117
60239
611

[1,1,7,1,23,1,47,1,79,1,113,89,23,73,31,1,283,89,
 113,139,173,67,47,1,619,131,109,83,113,211,191,1,
 1087,1,1223,1,1367,1,1511,367,83,1,1847,1,2017,
 317,571,241,199,1,2593,367,211,271,223,1,3229,
 1117,239,1]