426928

Appears in sequences

• 1/5 the number of n X 2 0..4 arrays with every element equal to exactly one or two of its horizontal and vertical neighbors.at n=6A185818
• 1/5 the number of n X 7 0..4 arrays with every element equal to exactly one or two of its horizontal and vertical neighbors.at n=1A185823
• 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=29A185825
• 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=34A185825