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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 5 |
| 3 | 17 |
| 4 | 31 |
| 5 | 127 |
| 6 | 257 |
| 7 | 511 |
| 8 | 683 |
| 9 | 2047 |
| 10 | 2731 |
| 11 | 3277 |
| 12 | 3641 |
| 13 | 8191 |
| 14 | 43691 |
| 15 | 52429 |
| 16 | 61681 |
| 17 | 65537 |
| 18 | 85489 |
| 19 | 131071 |
| 20 | 174763 |
| 21 | 178481 |
| 22 | 233017 |
| 23 | 253241 |
| 24 | 256999 |
| 25 | 486737 |
| 26 | 524287 |
| 27 | 704093 |
| 28 | 838861 |
| 29 | 1016801 |
| 30 | 1082401 |
| 31 | 1657009 |
| 32 | 1838599 |
| 33 | 1965379 |
| 34 | 2304167 |
| 35 | 2796203 |
| 36 | 3033169 |
| 37 | 3303821 |
[3,5,17,31,127,257,511,683,2047,2731,3277,3641, 8191,43691,52429,61681,65537,85489,131071,174763, 178481,233017,253241,256999,486737,524287,704093, 838861,1016801,1082401,1657009,1838599,1965379, 2304167,2796203,3033169,3303821] |