The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 19 |
| 3 | 913 |
| 4 | 91301 |
| 5 | 16434181 |
| 6 | 4831649215 |
| 7 | 2164578848321 |
| 8 | 1402647093712009 |
| 9 | 1262382384340808101 |
| 10 | 1527482685052377802211 |
| 11 | 2419532573122966438702225 |
| 12 | 4906812058293375937688112301 |
| 13 | 12502557124531521889229310142949 |
[0,1,19,913,91301,16434181,4831649215, 2164578848321,1402647093712009, 1262382384340808101,1527482685052377802211, 2419532573122966438702225, 4906812058293375937688112301, 12502557124531521889229310142949] |