|
| |
|
|
A007104
|
|
Number of elements (a b, c d) in GL(2,Z) with det = -1, trace n and 0 <= a <= {b, c} <= d.
|
|
2
| |
|
|
1, 1, 1, 2, 1, 4, 1, 4, 4, 4, 2, 10, 1, 5, 7, 12, 1, 10, 4, 10, 12, 4, 6, 24, 4, 12, 7, 10, 5, 26, 6, 20, 13, 12, 7, 30, 11, 4, 15, 32
(list; graph; refs; listen; history; internal format)
|
| |
| |
|
|
