564678
domain: N
Appears in sequences
- a(n) = 3rd elementary symmetric function of C(n,0), C(n,1), ..., C(n,[ n/2 ]).at n=5A025137
- a(n) = (k-1)st elementary symmetric function of C(n,0), C(n,1), ..., C(n,k), where k = floor( n/2 ).at n=7A025141
- a(n) = a(n-1) + 3*a(n-2) -2*a(n-3) - 2*a(n-4), where a(0) = 0, a(1) = -1, a(2) = 0, a(3) = 1.at n=26A295735