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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 7 |
| 4 | 23 |
| 5 | 31 |
| 6 | 127 |
| 7 | 127 |
| 8 | 383 |
| 9 | 991 |
| 10 | 2039 |
| 11 | 3583 |
| 12 | 6143 |
| 13 | 8191 |
| 14 | 63487 |
| 15 | 63487 |
| 16 | 129023 |
| 17 | 131071 |
| 18 | 522239 |
| 19 | 524287 |
| 20 | 1966079 |
| 21 | 4128767 |
| 22 | 14680063 |
| 23 | 14680063 |
| 24 | 33546239 |
| 25 | 67108351 |
| 26 | 201064447 |
| 27 | 260046847 |
| 28 | 536739839 |
| 29 | 1073479679 |
| 30 | 2147483647 |
| 31 | 2147483647 |
| 32 | 8581545983 |
| 33 | 16911433727 |
| 34 | 32212254719 |
[2,3,7,23,31,127,127,383,991,2039,3583,6143,8191, 63487,63487,129023,131071,522239,524287,1966079, 4128767,14680063,14680063,33546239,67108351, 201064447,260046847,536739839,1073479679, 2147483647,2147483647,8581545983,16911433727, 32212254719] |