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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 3 |
| 3 | 15 |
| 4 | 7 |
| 5 | 63 |
| 6 | 15 |
| 7 | 255 |
| 8 | 31 |
| 9 | 1023 |
| 10 | 63 |
| 11 | 4095 |
| 12 | 127 |
| 13 | 16383 |
| 14 | 255 |
| 15 | 65535 |
| 16 | 511 |
| 17 | 262143 |
| 18 | 1023 |
| 19 | 1048575 |
| 20 | 2047 |
| 21 | 4194303 |
| 22 | 4095 |
| 23 | 16777215 |
| 24 | 8191 |
| 25 | 67108863 |
| 26 | 16383 |
| 27 | 268435455 |
| 28 | 32767 |
| 29 | 1073741823 |
| 30 | 65535 |
| 31 | 4294967295 |
| 32 | 131071 |
| 33 | 17179869183 |
| 34 | 262143 |
| 35 | 68719476735 |
| 36 | 524287 |
[1,3,3,15,7,63,15,255,31,1023,63,4095,127,16383, 255,65535,511,262143,1023,1048575,2047,4194303, 4095,16777215,8191,67108863,16383,268435455,32767, 1073741823,65535,4294967295,131071,17179869183, 262143,68719476735,524287] |