The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 19 |
| 2 | 361 |
| 3 | 1036 |
| 4 | 26376 |
| 5 | 278904 |
| 6 | 4466304 |
| 7 | 67584976 |
| 8 | 1093365880 |
| 9 | 17888793702 |
| 10 | 382511445066 |
| 11 | 6457494717192 |
| 12 | 111640301736128 |
| 13 | 2145914064012167 |
| 14 | 44670752146501913 |
[19,361,1036,26376,278904,4466304,67584976, 1093365880,17888793702,382511445066,6457494717192, 111640301736128,2145914064012167, 44670752146501913] |