login

Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.

A304517 as a simple table

na(n)
121
253
3117
4245
5501
61013
72037
84085
98181
1016373
1132757
1265525
13131061
14262133
15524277
161048565
172097141
184194293
198388597
2016777205
2133554421
2267108853
23134217717
24268435445
25536870901
261073741813
272147483637
284294967285
298589934581
3017179869173
3134359738357
3268719476725
33137438953461
34274877906933
35549755813877

[21,53,117,245,501,1013,2037,4085,8181,16373,
 32757,65525,131061,262133,524277,1048565,2097141,
 4194293,8388597,16777205,33554421,67108853,
 134217717,268435445,536870901,1073741813,
 2147483637,4294967285,8589934581,17179869173,
 34359738357,68719476725,137438953461,274877906933,
 549755813877]