The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 964 |
| 3 | 5448000 |
| 4 | 88640000 |
| 5 | 9996800000 |
| 6 | 999968000000 |
| 7 | 99999680000000 |
| 8 | 9999996800000000 |
| 9 | 999999968000000000 |
| 10 | 99999999680000000000 |
| 11 | 9999999996800000000000 |
[0,964,5448000,88640000,9996800000,999968000000, 99999680000000,9999996800000000, 999999968000000000,99999999680000000000, 9999999996800000000000] |