The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 24 |
| 3 | 1872 |
| 4 | 1010880 |
| 5 | 3963053952 |
| 6 | 116846682720768 |
| 7 | 26600881786245651456 |
| 8 | 47704425342545776582103040 |
| 9 | 684471586202557775548246032261120 |
| 10 | 79552147744537053441626504660608566263808 |
| 11 | 75648987817302293231984664268437958161057494925312 |
[1,2,24,1872,1010880,3963053952,116846682720768, 26600881786245651456,47704425342545776582103040, 684471586202557775548246032261120, 79552147744537053441626504660608566263808, 75648987817302293231984664268437958161057494925312\ ] |