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A040986 as a simple table

na(n)
12
23
35
47
511
613
717
819
923
1029
1137
1243
1347
1453
1559
1661
1767
1873
1979
2083
2189
2297
23103
24107
25109
26113
27127
28137
29139
30149
31157
32163
33167
34173
35179
36193
37197
38199
39223
40227
41229
42233
43239
44257
45263
46269
47277
48283

[2,3,5,7,11,13,17,19,23,29,37,43,47,53,59,61,67,
 73,79,83,89,97,103,107,109,113,127,137,139,149,
 157,163,167,173,179,193,197,199,223,227,229,233,
 239,257,263,269,277,283]