1327802

Appears in sequences

• a(n) is the number of cyclic permutations that admit a [1,1,-1]-gridding.at n=16A303980
• a(n) is the number of cyclic permutations of length n that admit a [1,-1,-1]-gridding.at n=16A304201
• a(n) = Sum_{k=0..floor(n/4)} Stirling2(k,n - 4*k).at n=54A357941