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| n | a(n) |
|---|---|
| 1 | 15 |
| 2 | 31 |
| 3 | 47 |
| 4 | 63 |
| 5 | 95 |
| 6 | 127 |
| 7 | 191 |
| 8 | 255 |
| 9 | 383 |
| 10 | 511 |
| 11 | 767 |
| 12 | 1023 |
| 13 | 1535 |
| 14 | 2047 |
| 15 | 3071 |
| 16 | 4095 |
| 17 | 6143 |
| 18 | 8191 |
| 19 | 12287 |
| 20 | 16383 |
| 21 | 24575 |
| 22 | 32767 |
| 23 | 49151 |
| 24 | 65535 |
| 25 | 98303 |
| 26 | 131071 |
| 27 | 196607 |
| 28 | 262143 |
| 29 | 393215 |
| 30 | 524287 |
| 31 | 786431 |
| 32 | 1048575 |
| 33 | 1572863 |
| 34 | 2097151 |
| 35 | 3145727 |
| 36 | 4194303 |
| 37 | 6291455 |
| 38 | 8388607 |
| 39 | 12582911 |
[15,31,47,63,95,127,191,255,383,511,767,1023,1535, 2047,3071,4095,6143,8191,12287,16383,24575,32767, 49151,65535,98303,131071,196607,262143,393215, 524287,786431,1048575,1572863,2097151,3145727, 4194303,6291455,8388607,12582911] |