The OEIS is supported by the many generous donors to the OEIS Foundation.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 2 |
| 4 | 0 |
| 5 | 0 |
| 6 | 40 |
| 7 | 0 |
| 8 | 5040 |
| 9 | 2240 |
| 10 | 0 |
| 11 | 1663200 |
| 12 | 246400 |
| 13 | 479001600 |
| 14 | 605404800 |
| 15 | 44844800 |
| 16 | 699941088000 |
| 17 | 274450176000 |
| 18 | 355699625881600 |
| 19 | 836634972096000 |
| 20 | 156436600320000 |
| 21 | 1437392253237248000 |
| 22 | 1021561084051200000 |
| 23 | 1124111547465274368000 |
[1,0,0,2,0,0,40,0,5040,2240,0,1663200,246400, 479001600,605404800,44844800,699941088000, 274450176000,355699625881600,836634972096000, 156436600320000,1437392253237248000, 1021561084051200000,1124111547465274368000] |