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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 7 |
| 4 | 13 |
| 5 | 31 |
| 6 | 61 |
| 7 | 127 |
| 8 | 251 |
| 9 | 509 |
| 10 | 1021 |
| 11 | 2039 |
| 12 | 4093 |
| 13 | 8191 |
| 14 | 16381 |
| 15 | 32749 |
| 16 | 65521 |
| 17 | 131071 |
| 18 | 262139 |
| 19 | 524287 |
| 20 | 1048573 |
| 21 | 2097143 |
| 22 | 4194301 |
| 23 | 8388593 |
| 24 | 16777213 |
| 25 | 33554393 |
| 26 | 67108859 |
| 27 | 134217689 |
| 28 | 268435399 |
| 29 | 536870909 |
| 30 | 1073741789 |
| 31 | 2147483647 |
| 32 | 4294967291 |
| 33 | 8589934583 |
| 34 | 17179869143 |
| 35 | 34359738337 |
| 36 | 68719476731 |
| 37 | 137438953447 |
[2,3,7,13,31,61,127,251,509,1021,2039,4093,8191, 16381,32749,65521,131071,262139,524287,1048573, 2097143,4194301,8388593,16777213,33554393, 67108859,134217689,268435399,536870909,1073741789, 2147483647,4294967291,8589934583,17179869143, 34359738337,68719476731,137438953447] |