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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) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 0 |
| 5 | 4 |
| 6 | 0 |
| 7 | 36 |
| 8 | 0 |
| 9 | 576 |
| 10 | 0 |
| 11 | 14400 |
| 12 | 0 |
| 13 | 518400 |
| 14 | 0 |
| 15 | 25401600 |
| 16 | 0 |
| 17 | 1625702400 |
| 18 | 0 |
| 19 | 131681894400 |
| 20 | 0 |
| 21 | 13168189440000 |
| 22 | 0 |
| 23 | 1593350922240000 |
| 24 | 0 |
| 25 | 229442532802560000 |
| 26 | 0 |
| 27 | 38775788043632640000 |
| 28 | 0 |
| 29 | 7600054456551997440000 |
| 30 | 0 |
[1,1,1,0,4,0,36,0,576,0,14400,0,518400,0,25401600, 0,1625702400,0,131681894400,0,13168189440000,0, 1593350922240000,0,229442532802560000,0, 38775788043632640000,0,7600054456551997440000,0] |