The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 7 |
| 3 | 76 |
| 4 | 1333 |
| 5 | 26816 |
| 6 | 596899 |
| 7 | 9687616 |
| 8 | -295060055 |
| 9 | -58508094464 |
| 10 | -6236843712929 |
| 11 | -591511769242624 |
| 12 | -54886056134084963 |
| 13 | -5038712914671656960 |
| 14 | -452211859222540203653 |
| 15 | -37655001036842279665664 |
| 16 | -2423249878967831840406191 |
| 17 | 15689693768161840558505984 |
| 18 | 52587298505917986133331289655 |
[1,1,7,76,1333,26816,596899,9687616,-295060055, -58508094464,-6236843712929,-591511769242624, -54886056134084963,-5038712914671656960, -452211859222540203653,-37655001036842279665664, -2423249878967831840406191, 15689693768161840558505984, 52587298505917986133331289655] |