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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 7 |
| 3 | 4 |
| 4 | 31 |
| 5 | 16 |
| 6 | 127 |
| 7 | 68 |
| 8 | 511 |
| 9 | 260 |
| 10 | 2047 |
| 11 | 1108 |
| 12 | 8191 |
| 13 | 4180 |
| 14 | 32767 |
| 15 | 17748 |
| 16 | 131071 |
| 17 | 66900 |
| 18 | 524287 |
| 19 | 283988 |
| 20 | 2097151 |
| 21 | 1070420 |
| 22 | 8388607 |
| 23 | 4543828 |
| 24 | 33554431 |
| 25 | 17126740 |
| 26 | 134217727 |
| 27 | 72701268 |
| 28 | 536870911 |
| 29 | 274027860 |
| 30 | 2147483647 |
| 31 | 1163220308 |
| 32 | 8589934591 |
| 33 | 4384445780 |
[1,1,7,4,31,16,127,68,511,260,2047,1108,8191,4180, 32767,17748,131071,66900,524287,283988,2097151, 1070420,8388607,4543828,33554431,17126740, 134217727,72701268,536870911,274027860,2147483647, 1163220308,8589934591,4384445780] |