login

A183075 as a simple table

na(n)
11
23
37
431
563
6127
71023
88191
916383
1032767
11131071
12524287
1367108863
141073741823
152147483647
1617179869183
17274877906943
188796093022207
192251799813685247
202305843009213693951

[1,3,7,31,63,127,1023,8191,16383,32767,131071,
 524287,67108863,1073741823,2147483647,17179869183,
 274877906943,8796093022207,2251799813685247,
 2305843009213693951]