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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 7 |
| 3 | 7 |
| 4 | 31 |
| 5 | 63 |
| 6 | 127 |
| 7 | 255 |
| 8 | 511 |
| 9 | 63 |
| 10 | 2047 |
| 11 | 4095 |
| 12 | 8191 |
| 13 | 16383 |
| 14 | 32767 |
| 15 | 65535 |
| 16 | 131071 |
| 17 | 254975 |
| 18 | 524287 |
| 19 | 1048575 |
| 20 | 2097151 |
| 21 | 4161535 |
| 22 | 8388607 |
| 23 | 16777215 |
| 24 | 33554431 |
| 25 | 67108863 |
| 26 | 134217727 |
| 27 | 264241151 |
| 28 | 536870911 |
| 29 | 1023410175 |
| 30 | 2147483647 |
| 31 | 4286578687 |
| 32 | 8589934591 |
[1,1,7,7,31,63,127,255,511,63,2047,4095,8191, 16383,32767,65535,131071,254975,524287,1048575, 2097151,4161535,8388607,16777215,33554431, 67108863,134217727,264241151,536870911,1023410175, 2147483647,4286578687,8589934591] |