89528

Appears in sequences

• Number of nX2 0..2 arrays with no element equal to the average of its horizontal and vertical neighbors.at n=5A197436
• Number of nX6 0..2 arrays with no element equal to the average of its horizontal and vertical neighbors.at n=1A197440
• T(n,k)=Number of nXk 0..2 arrays with no element equal to the average of its horizontal and vertical neighbors.at n=22A197442
• T(n,k)=Number of nXk 0..2 arrays with no element equal to the average of its horizontal and vertical neighbors.at n=26A197442
• a(n) = Sum_{k=0..n} 2^k * binomial(2*n+1,k) * binomial(2*n-k,n-k).at n=5A383884