The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 7 |
| 3 | 144 |
| 4 | 16704 |
| 5 | 8396800 |
| 6 | 17180459008 |
| 7 | 140737555464192 |
| 8 | 4611686036680998912 |
| 9 | 604462909816110680375296 |
| 10 | 316912650057066639048407252992 |
| 11 | 664613997892457954898647603849723904 |
| 12 | 5575186299632655785460668023508722111217664 |
| 13 | 187072209578355573530072277557703869206096815063040 |
[1,7,144,16704,8396800,17180459008, 140737555464192,4611686036680998912, 604462909816110680375296, 316912650057066639048407252992, 664613997892457954898647603849723904, 5575186299632655785460668023508722111217664, 18707220957835557353007227755770386920609681506304\ 0] |