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A273043 as a simple table

na(n)
11
23
33
47
537
637
737
837
937
1037
1159
1259
1359
1459
1573
1673
1773
1873
1973
2097
2197
2297
23137
24157
25157
26157
27157
28157
29157
30157
31157
32157
33157
34157
35157
36157
37157
38157
39157
40157
41251
42251
43251
44251
45251
46251
47251
48251
49251
50251
51277
52277
53277
54277
55277
56277
57277

[1,3,3,7,37,37,37,37,37,37,59,59,59,59,73,73,73,
 73,73,97,97,97,137,157,157,157,157,157,157,157,
 157,157,157,157,157,157,157,157,157,157,251,251,
 251,251,251,251,251,251,251,251,277,277,277,277,
 277,277,277]