28493946

Appears in sequences

• T(n,k)=Number of nXk arrays containing k copies of 0..n-1 with every element equal to at least one horizontal or vertical neighbor and the top left element equal to 0.at n=39A267901
• Number of 4Xn arrays containing n copies of 0..4-1 with every element equal to at least one horizontal or vertical neighbor and the top left element equal to 0.at n=5A267904