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A215386 as a simple table

na(n)
12
23
313
417
547
661
779
883
9101
10113
11127
12149
13157
14167
15179
16193
17211
18223
19233
20277
21281
22311
23347
24409
25421
26431
27443
28457
29479
30487
31509
32523
33541
34563
35607
36619
37641
38673
39677
40739
41743
42751
43761
44773
45787
46809
47827
48839
49853
50883
51919
52937
53941

[2,3,13,17,47,61,79,83,101,113,127,149,157,167,
 179,193,211,223,233,277,281,311,347,409,421,431,
 443,457,479,487,509,523,541,563,607,619,641,673,
 677,739,743,751,761,773,787,809,827,839,853,883,
 919,937,941]