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A146556 as a simple table

na(n)
13
25
37
49
517
619
721
843
945
10111
11193
12195
13477
14927
151777
161779
172973
184963
196397
206399
2112961
2214983
2314985
2440191
2566993
26114063
27193233
28334959
29558273
30951999
311586673
323724815
338255985
3418271887
3531279473
3666853647
37171456753
38339654927

[3,5,7,9,17,19,21,43,45,111,193,195,477,927,1777,
 1779,2973,4963,6397,6399,12961,14983,14985,40191,
 66993,114063,193233,334959,558273,951999,1586673,
 3724815,8255985,18271887,31279473,66853647,
 171456753,339654927]