The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 2 |
| 4 | 2 |
| 5 | 4 |
| 6 | 4 |
| 7 | 8 |
| 8 | 8 |
| 9 | 14 |
| 10 | 12 |
| 11 | 20 |
| 12 | 20 |
| 13 | 27 |
| 14 | 28 |
| 15 | 38 |
| 16 | 36 |
| 17 | 47 |
| 18 | 48 |
[0,0,2,2,4,4,8,8,14,12,20,20,27,28,38,36,47,48] |