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) |
|---|---|
| 1 | 1 |
| 2 | -1 |
| 3 | 1 |
| 4 | 2 |
| 5 | -3 |
| 6 | 1 |
| 7 | 0 |
| 8 | 11 |
| 9 | -6 |
| 10 | 1 |
| 11 | 0 |
| 12 | -20 |
| 13 | 35 |
| 14 | -10 |
| 15 | 1 |
| 16 | 0 |
| 17 | 40 |
| 18 | -135 |
| 19 | 85 |
| 20 | -15 |
| 21 | 1 |
| 22 | 0 |
| 23 | 0 |
| 24 | 490 |
| 25 | -525 |
| 26 | 175 |
| 27 | -21 |
| 28 | 1 |
| 29 | 0 |
| 30 | 0 |
| 31 | -1120 |
| 32 | 2905 |
| 33 | -1540 |
| 34 | 322 |
| 35 | -28 |
| 36 | 1 |
| 37 | 0 |
| 38 | 0 |
| 39 | 2240 |
| 40 | -12600 |
| 41 | 11865 |
| 42 | -3780 |
| 43 | 546 |
| 44 | -36 |
| 45 | 1 |
| 46 | 0 |
| 47 | 0 |
| 48 | 0 |
| 49 | 47600 |
| 50 | -76545 |
| 51 | 38325 |
| 52 | -8190 |
| 53 | 870 |
| 54 | -45 |
| 55 | 1 |
[1,-1,1,2,-3,1,0,11,-6,1,0,-20,35,-10,1,0,40,-135, 85,-15,1,0,0,490,-525,175,-21,1,0,0,-1120,2905, -1540,322,-28,1,0,0,2240,-12600,11865,-3780,546, -36,1,0,0,0,47600,-76545,38325,-8190,870,-45,1] |