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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 1 |
| 3 | 15 |
| 4 | 3 |
| 5 | 63 |
| 6 | 3 |
| 7 | 255 |
| 8 | 9 |
| 9 | 1023 |
| 10 | 9 |
| 11 | 4095 |
| 12 | 15 |
| 13 | 16383 |
| 14 | 15 |
| 15 | 65535 |
| 16 | 255 |
| 17 | 262143 |
| 18 | 153 |
| 19 | 1048575 |
| 20 | 147 |
| 21 | 4194303 |
| 22 | 201 |
| 23 | 16777215 |
| 24 | 9 |
| 25 | 67108863 |
| 26 | 227 |
| 27 | 268435455 |
| 28 | 227 |
| 29 | 1073741823 |
| 30 | 227 |
| 31 | 4294967295 |
| 32 | 65535 |
| 33 | 17179869183 |
| 34 | 65535 |
| 35 | 68719476735 |
| 36 | 61951 |
| 37 | 274877906943 |
| 38 | 58623 |
[1,3,1,15,3,63,3,255,9,1023,9,4095,15,16383,15, 65535,255,262143,153,1048575,147,4194303,201, 16777215,9,67108863,227,268435455,227,1073741823, 227,4294967295,65535,17179869183,65535, 68719476735,61951,274877906943,58623] |