|
| |
|
|
A025535
|
|
a(n) = (1/C(2n,0) - 1/C(2n,1) + ... + d/C(2n,2n))*L, where d = (-1)^2n, L = LCM{C(2n,0), C(2n,1),..., C(2n,2n)}.
|
|
0
| |
|
|
1, 3, 20, 105, 504, 4620, 51480, 45045, 1361360, 23279256, 21162960, 446185740, 2059318800, 5736673800, 155272637520, 4512611027925, 8494326640800, 8022419605200, 281206918792800, 267146572853160, 10431437606647200
(list; graph; refs; listen; history; internal format)
|
| |
| |
|
|
