1266624

Appears in sequences

• 1/5 the number of nX3 0..4 arrays with every element equal to exactly one or two of its horizontal and vertical neighbors.at n=4A185819
• 1/5 the number of n X 5 0..4 arrays with every element equal to exactly one or two of its horizontal and vertical neighbors.at n=2A185821
• T(n,k)=1/5 the number of nXk 0..4 arrays with every element equal to exactly one or two of its horizontal and vertical neighbors.at n=23A185825
• T(n,k)=1/5 the number of nXk 0..4 arrays with every element equal to exactly one or two of its horizontal and vertical neighbors.at n=25A185825