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A049550 as a simple table

na(n)
12
217
323
431
541
647
771
889
9113
10127
11137
12167
13191
14223
15233
16239
17257
18263
19281
20311
21353
22359
23383
24401
25431
26439
27449
28457
29479
30503
31521
32569
33593
34599
35601
36617
37641
38647
39719
40727
41743
42761
43809
44839
45857
46863
47881
48887
49911
50929
51953
52977
53983

[2,17,23,31,41,47,71,89,113,127,137,167,191,223,
 233,239,257,263,281,311,353,359,383,401,431,439,
 449,457,479,503,521,569,593,599,601,617,641,647,
 719,727,743,761,809,839,857,863,881,887,911,929,
 953,977,983]