login

A373275 as a simple table

na(n)
11
21
35
45
517
629
765
8117
9261
10497
111025
122017
134097
148129
1516405
1632629
1765537
18130845
19262145
20523765
211048645
222096129
234194305
248386641
2516777233
2633550337
2767109125
28134209477
29268435457
30536855053
311073741825
322147450741
334294968325
348589869057

[1,1,5,5,17,29,65,117,261,497,1025,2017,4097,8129,
 16405,32629,65537,130845,262145,523765,1048645,
 2096129,4194305,8386641,16777233,33550337,
 67109125,134209477,268435457,536855053,1073741825,
 2147450741,4294968325,8589869057]