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A043751 as a simple table

na(n)
121
237
341
443
545
653
769
873
975
1077
1181
1283
1387
1489
1591
1693
17101
18105
19107
20109
21117
22133
23137
24139
25141
26145
27147
28151
29153
30155
31157
32161
33163
34167
35175
36177
37179
38183
39185
40187
41189
42197
43201
44203
45205
46209
47211
48215
49217

[21,37,41,43,45,53,69,73,75,77,81,83,87,89,91,93,
 101,105,107,109,117,133,137,139,141,145,147,151,
 153,155,157,161,163,167,175,177,179,183,185,187,
 189,197,201,203,205,209,211,215,217]