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A278643 as a simple table

na(n)
127
237
347
473
583
687
7125
8139
9141
10167
11175
12197
13237
14267
15273
16277
17281
18305
19307
20327
21335
22337
23345
24351
25379
26387
27397
28405
29421
30433
31463
32471
33477
34487
35505
36531
37537
38547
39567
40577
41589
42613
43619
44629
45631
46635
47659
48661
49665
50687
51691
52697
53703
54715
55727
56731
57743
58753
59789
60805
61821
62857
63877
64883
65919
66941

[27,37,47,73,83,87,125,139,141,167,175,197,237,
 267,273,277,281,305,307,327,335,337,345,351,379,
 387,397,405,421,433,463,471,477,487,505,531,537,
 547,567,577,589,613,619,629,631,635,659,661,665,
 687,691,697,703,715,727,731,743,753,789,805,821,
 857,877,883,919,941]