The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 7 |
| 3 | 11 |
| 4 | 23 |
| 5 | 43 |
| 6 | 71 |
| 7 | 219 |
| 8 | 503 |
| 9 | 1003 |
| 10 | 1991 |
| 11 | 4059 |
| 12 | 8183 |
| 13 | 16363 |
| 14 | 32711 |
| 15 | 65499 |
| 16 | 131063 |
| 17 | 262123 |
| 18 | 524231 |
| 19 | 1048539 |
| 20 | 2097143 |
| 21 | 4194283 |
| 22 | 8388551 |
| 23 | 16777179 |
| 24 | 33554423 |
| 25 | 67108843 |
| 26 | 134217671 |
| 27 | 268435419 |
| 28 | 536870903 |
| 29 | 1073741803 |
| 30 | 2147483591 |
| 31 | 4294967259 |
| 32 | 8589934583 |
[1,3,7,11,23,43,71,219,503,1003,1991,4059,8183, 16363,32711,65499,131063,262123,524231,1048539, 2097143,4194283,8388551,16777179,33554423, 67108843,134217671,268435419,536870903,1073741803, 2147483591,4294967259,8589934583] |