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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 1 |
| 2 | 5 |
| 3 | 7 |
| 4 | 17 |
| 5 | 31 |
| 6 | 65 |
| 7 | 127 |
| 8 | 257 |
| 9 | 511 |
| 10 | 1025 |
| 11 | 2047 |
| 12 | 4097 |
| 13 | 8191 |
| 14 | 16385 |
| 15 | 32767 |
| 16 | 65537 |
| 17 | 131071 |
| 18 | 262145 |
| 19 | 524287 |
| 20 | 1048577 |
| 21 | 2097151 |
| 22 | 4194305 |
| 23 | 8388607 |
| 24 | 16777217 |
| 25 | 33554431 |
| 26 | 67108865 |
| 27 | 134217727 |
| 28 | 268435457 |
| 29 | 536870911 |
| 30 | 1073741825 |
| 31 | 2147483647 |
| 32 | 4294967297 |
| 33 | 8589934591 |
[2,1,5,7,17,31,65,127,257,511,1025,2047,4097,8191, 16385,32767,65537,131071,262145,524287,1048577, 2097151,4194305,8388607,16777217,33554431, 67108865,134217727,268435457,536870911,1073741825, 2147483647,4294967297,8589934591] |