The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 22 |
| 3 | 114 |
| 4 | 888 |
| 5 | 10804 |
| 6 | 199988 |
| 7 | 5740166 |
| 8 | 251606900 |
| 9 | 17066691742 |
| 10 | 1770282323740 |
| 11 | 283975401794580 |
| 12 | 69694377176377328 |
| 13 | 26447798453646675184 |
| 14 | 15357128901797793996652 |
| 15 | 13788844798416302935620998 |
[7,22,114,888,10804,199988,5740166,251606900, 17066691742,1770282323740,283975401794580, 69694377176377328,26447798453646675184, 15357128901797793996652, 13788844798416302935620998] |