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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 13 |
| 3 | 17 |
| 4 | 97 |
| 5 | 257 |
| 6 | 401 |
| 7 | 769 |
| 8 | 1153 |
| 9 | 3041 |
| 10 | 14177 |
| 11 | 65537 |
| 12 | 286721 |
| 13 | 1810433 |
| 14 | 2752513 |
| 15 | 4043777 |
| 16 | 7340033 |
| 17 | 13631489 |
| 18 | 23068673 |
| 19 | 72222721 |
| 20 | 319291393 |
| 21 | 348061697 |
| 22 | 625483777 |
| 23 | 3937533953 |
| 24 | 54498164737 |
| 25 | 106216554497 |
| 26 | 121899667073 |
| 27 | 151597350913 |
| 28 | 342456532993 |
[5,13,17,97,257,401,769,1153,3041,14177,65537, 286721,1810433,2752513,4043777,7340033,13631489, 23068673,72222721,319291393,348061697,625483777, 3937533953,54498164737,106216554497,121899667073, 151597350913,342456532993] |