The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 2 | 0 |
| 3 | 2 |
| 4 | 1 |
| 5 | 4 |
| 6 | 5 |
| 7 | 14 |
| 8 | 21 |
| 9 | 48 |
| 10 | 85 |
| 11 | 182 |
| 12 | 341 |
| 13 | 704 |
| 14 | 1365 |
| 15 | 2774 |
| 16 | 5461 |
| 17 | 11008 |
| 18 | 21845 |
| 19 | 43862 |
| 20 | 87381 |
| 21 | 175104 |
| 22 | 349525 |
| 23 | 699734 |
| 24 | 1398101 |
| 25 | 2797568 |
| 26 | 5592405 |
| 27 | 11187542 |
| 28 | 22369621 |
| 29 | 44744704 |
| 30 | 89478485 |
| 31 | 178967894 |
| 32 | 357913941 |
| 33 | 715849728 |
[0,2,1,4,5,14,21,48,85,182,341,704,1365,2774,5461, 11008,21845,43862,87381,175104,349525,699734, 1398101,2797568,5592405,11187542,22369621, 44744704,89478485,178967894,357913941,715849728] |