The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 3 |
| 5 | 4 |
| 6 | 5 |
| 7 | 20 |
| 8 | 27 |
| 9 | 35 |
| 10 | 119 |
| 11 | 164 |
| 12 | 219 |
| 13 | 714 |
| 14 | 1000 |
| 15 | 1364 |
| 16 | 4367 |
| 17 | 6187 |
| 18 | 8567 |
| 19 | 27131 |
| 20 | 38759 |
| 21 | 54263 |
| 22 | 170543 |
| 23 | 245156 |
| 24 | 346103 |
| 25 | 1081574 |
| 26 | 1562274 |
| 27 | 2220074 |
| 28 | 6906899 |
| 29 | 10015004 |
| 30 | 14307149 |
| 31 | 44352164 |
| 32 | 64512239 |
| 33 | 92561039 |
| 34 | 286097759 |
[0,0,0,3,4,5,20,27,35,119,164,219,714,1000,1364, 4367,6187,8567,27131,38759,54263,170543,245156, 346103,1081574,1562274,2220074,6906899,10015004, 14307149,44352164,64512239,92561039,286097759] |