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A056996 as a simple table

na(n)
15
211
319
421
523
627
733
835
939
1043
1145
1247
1351
1453
1555
1659
1767
1869
1971
2079
2181
2283
2387
2495
2599
26101
27103
28105
29107
30113
31115
32117
33119
34123
35129
36131
37135
38139
39141
40143
41147
42151
43153
44155
45159
46165
47167
48171
49173
50175
51177
52179
53185
54187
55189
56191
57193
58195

[5,11,19,21,23,27,33,35,39,43,45,47,51,53,55,59,
 67,69,71,79,81,83,87,95,99,101,103,105,107,113,
 115,117,119,123,129,131,135,139,141,143,147,151,
 153,155,159,165,167,171,173,175,177,179,185,187,
 189,191,193,195]