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A225375 as a simple table

na(n)
115
221
333
435
539
645
751
855
957
1063
1165
1269
1375
1477
1585
1687
1791
1893
1995
2099
21111
22115
23117
24119
25123
26129
27133
28135
29141
30143
31145
32147
33153
34155
35159
36161
37171
38175
39177
40183
41185
42187
43189
44201
45203
46205
47207
48209
49213
50215
51217
52219
53221
54225
55235
56237

[15,21,33,35,39,45,51,55,57,63,65,69,75,77,85,87,
 91,93,95,99,111,115,117,119,123,129,133,135,141,
 143,145,147,153,155,159,161,171,175,177,183,185,
 187,189,201,203,205,207,209,213,215,217,219,221,
 225,235,237]