The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 702 |
| 3 | 9889 |
| 4 | 418382 |
| 5 | 15790468 |
| 6 | 598203550 |
| 7 | 23106300531 |
| 8 | 882586820005 |
| 9 | 33883349300951 |
| 10 | 1298742292582865 |
| 11 | 49802609445810069 |
| 12 | 1909600274607825976 |
| 13 | 73221979973762752997 |
| 14 | 2807623345042622681366 |
| 15 | 107655520424372228194333 |
[0,702,9889,418382,15790468,598203550,23106300531, 882586820005,33883349300951,1298742292582865, 49802609445810069,1909600274607825976, 73221979973762752997,2807623345042622681366, 107655520424372228194333] |