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A100819 as a simple table

na(n)
19
215
321
425
527
633
735
839
945
1049
1151
1255
1357
1463
1565
1675
1777
1881
1985
2087
2191
2293
2395
2499
25105
26117
27119
28121
29123
30125
31129
32133
33135
34143
35145
36147
37153
38155
39165
40169
41171
42175
43177
44183
45187
46189
47195
48203
49205
50209
51213
52215
53217
54219
55221

[9,15,21,25,27,33,35,39,45,49,51,55,57,63,65,75,
 77,81,85,87,91,93,95,99,105,117,119,121,123,125,
 129,133,135,143,145,147,153,155,165,169,171,175,
 177,183,187,189,195,203,205,209,213,215,217,219,
 221]