login

A171518 as a simple table

na(n)
15
27
313
417
553
673
783
8113
9127
10157
11193
12223
13277
14347
15367
16433
17613
18647
19673
20743
21797
22907
23937
241117
251217
261373
271427
281483
291543
301597
311637
321667
331877
341933
352027
362237
372297
382447
392647
402687
412843
423083
433137
443613
453797
464073
474463
484483

[5,7,13,17,53,73,83,113,127,157,193,223,277,347,
 367,433,613,647,673,743,797,907,937,1117,1217,
 1373,1427,1483,1543,1597,1637,1667,1877,1933,2027,
 2237,2297,2447,2647,2687,2843,3083,3137,3613,3797,
 4073,4463,4483]