login

A209492 as a simple table

na(n)
01
13
25
37
49
511
615
717
819
923
1031
1133
1235
1339
1447
1563
1665
1767
1871
1979
2095
21127
22129
23131
24135
25143
26159
27191
28255
29257
30259
31263
32271
33287
34319
35383
36511
37513
38515
39519
40527
41543
42575
43639
44767
451023
461025
471027
481031
491039
501055
511087
521151
531279
541535
552047
562049
572051
582055
592063
602079
612111
622175
632303
642559
653071

[1,3,5,7,9,11,15,17,19,23,31,33,35,39,47,63,65,67,
 71,79,95,127,129,131,135,143,159,191,255,257,259,
 263,271,287,319,383,511,513,515,519,527,543,575,
 639,767,1023,1025,1027,1031,1039,1055,1087,1151,
 1279,1535,2047,2049,2051,2055,2063,2079,2111,2175,
 2303,2559,3071]