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 | -1 |
| 3 | -3 |
| 4 | -7 |
| 5 | -14 |
| 6 | -23 |
| 7 | -24 |
| 8 | 21 |
| 9 | 220 |
| 10 | 821 |
| 11 | 2261 |
| 12 | 4935 |
| 13 | 7814 |
| 14 | 3615 |
| 15 | -34251 |
| 16 | -179511 |
| 17 | -593420 |
| 18 | -1521779 |
| 19 | -3001089 |
| 20 | -3500101 |
| 21 | 4410846 |
| 22 | 44902907 |
| 23 | 179440150 |
| 24 | 526896835 |
| 25 | 1212055740 |
| 26 | 1976482795 |
| 27 | 697522595 |
| 28 | -10858119895 |
| 29 | -56563343774 |
[1,0,-1,-3,-7,-14,-23,-24,21,220,821,2261,4935, 7814,3615,-34251,-179511,-593420,-1521779, -3001089,-3500101,4410846,44902907,179440150, 526896835,1212055740,1976482795,697522595, -10858119895,-56563343774] |