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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 5 |
| 3 | 3 |
| 4 | 23 |
| 5 | 15 |
| 6 | 95 |
| 7 | 63 |
| 8 | 383 |
| 9 | 255 |
| 10 | 1535 |
| 11 | 1023 |
| 12 | 6143 |
| 13 | 4095 |
| 14 | 24575 |
| 15 | 16383 |
| 16 | 98303 |
| 17 | 65535 |
| 18 | 393215 |
| 19 | 262143 |
| 20 | 1572863 |
| 21 | 1048575 |
| 22 | 6291455 |
| 23 | 4194303 |
| 24 | 25165823 |
| 25 | 16777215 |
| 26 | 100663295 |
| 27 | 67108863 |
| 28 | 402653183 |
| 29 | 268435455 |
| 30 | 1610612735 |
| 31 | 1073741823 |
| 32 | 6442450943 |
| 33 | 4294967295 |
[1,1,5,3,23,15,95,63,383,255,1535,1023,6143,4095, 24575,16383,98303,65535,393215,262143,1572863, 1048575,6291455,4194303,25165823,16777215, 100663295,67108863,402653183,268435455,1610612735, 1073741823,6442450943,4294967295] |