The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 2 |
| 6 | 1067771 |
| 7 | 43506231489 |
| 8 | 501425871595264 |
| 9 | 2719674203584968630 |
| 10 | 9172837864705015158979 |
| 11 | 22524989249381408262409893 |
| 12 | 44328073635887914351462953684 |
| 13 | 74381256243136645820404637874910 |
[0,0,0,0,0,2,1067771,43506231489,501425871595264, 2719674203584968630,9172837864705015158979, 22524989249381408262409893, 44328073635887914351462953684, 74381256243136645820404637874910] |