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 | 0 |
| 1 | 2 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | -4 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 10 |
| 10 | 0 |
| 11 | 0 |
| 12 | 0 |
| 13 | -20 |
| 14 | 0 |
| 15 | 0 |
| 16 | 0 |
| 17 | 36 |
| 18 | 0 |
| 19 | 0 |
| 20 | 0 |
| 21 | -64 |
| 22 | 0 |
| 23 | 0 |
| 24 | 0 |
| 25 | 110 |
| 26 | 0 |
| 27 | 0 |
| 28 | 0 |
| 29 | -180 |
| 30 | 0 |
| 31 | 0 |
| 32 | 0 |
| 33 | 288 |
| 34 | 0 |
| 35 | 0 |
| 36 | 0 |
| 37 | -452 |
| 38 | 0 |
| 39 | 0 |
| 40 | 0 |
| 41 | 692 |
| 42 | 0 |
| 43 | 0 |
| 44 | 0 |
| 45 | -1044 |
| 46 | 0 |
| 47 | 0 |
| 48 | 0 |
| 49 | 1554 |
| 50 | 0 |
| 51 | 0 |
| 52 | 0 |
| 53 | -2276 |
| 54 | 0 |
| 55 | 0 |
| 56 | 0 |
| 57 | 3296 |
| 58 | 0 |
| 59 | 0 |
| 60 | 0 |
| 61 | -4724 |
| 62 | 0 |
| 63 | 0 |
| 64 | 0 |
| 65 | 6696 |
| 66 | 0 |
| 67 | 0 |
| 68 | 0 |
| 69 | -9408 |
| 70 | 0 |
| 71 | 0 |
| 72 | 0 |
| 73 | 13108 |
| 74 | 0 |
| 75 | 0 |
| 76 | 0 |
| 77 | -18112 |
| 78 | 0 |
| 79 | 0 |
| 80 | 0 |
| 81 | 24850 |
| 82 | 0 |
[0,2,0,0,0,-4,0,0,0,10,0,0,0,-20,0,0,0,36,0,0,0, -64,0,0,0,110,0,0,0,-180,0,0,0,288,0,0,0,-452,0,0, 0,692,0,0,0,-1044,0,0,0,1554,0,0,0,-2276,0,0,0, 3296,0,0,0,-4724,0,0,0,6696,0,0,0,-9408,0,0,0, 13108,0,0,0,-18112,0,0,0,24850,0] |