The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 5 |
| 2 | 32 |
| 3 | 164 |
| 4 | 768 |
| 5 | 3353 |
| 6 | 13981 |
| 7 | 56229 |
| 8 | 226333 |
| 9 | 911157 |
| 10 | 3656509 |
| 11 | 14652789 |
| 12 | 58664893 |
| 13 | 234770037 |
| 14 | 939301309 |
| 15 | 3757650549 |
[1,5,32,164,768,3353,13981,56229,226333,911157, 3656509,14652789,58664893,234770037,939301309, 3757650549] |