The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 14 |
| 2 | 124 |
| 3 | 1144 |
| 4 | 10616 |
| 5 | 98600 |
| 6 | 915904 |
| 7 | 8508084 |
| 8 | 79034176 |
| 9 | 734172816 |
| 10 | 6819958040 |
| 11 | 63352697344 |
| 12 | 588502780296 |
| 13 | 5466784162856 |
| 14 | 50782647228176 |
| 15 | 471735701043648 |
| 16 | 4382098684999456 |
| 17 | 40706668676111984 |
| 18 | 378136822974584768 |
[1,14,124,1144,10616,98600,915904,8508084, 79034176,734172816,6819958040,63352697344, 588502780296,5466784162856,50782647228176, 471735701043648,4382098684999456, 40706668676111984,378136822974584768] |