Number of 2*n-sided cycles with the property that one makes the same number of left and right turns while following its edges.
A371611
Number of 2*n-sided cycles with the property that one makes the same number of left and right turns while following its edges.
Terms
- a(0) =4a(1) =36a(2) =1240a(3) =73240a(4) =7171176a(5) =1016813448a(6) =198480110880
External references
- oeis: A371611