The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 126 |
| 2 | 4431876 |
| 3 | 23124921876 |
| 4 | 85800824609376 |
| 5 | 285912852294921876 |
| 6 | 916111390974365234376 |
| 7 | 2891333179750701904296876 |
| 8 | 9071116924325493011474609376 |
| 9 | 28391912978833403911590576171876 |
[126,4431876,23124921876,85800824609376, 285912852294921876,916111390974365234376, 2891333179750701904296876, 9071116924325493011474609376, 28391912978833403911590576171876] |