839006010

Appears in sequences

• Number of n X n 0..3 arrays with values 0..3 introduced in row major order and each element equal to one or two horizontal and vertical neighbors.at n=4A199141
• Number of nX5 0..3 arrays with values 0..3 introduced in row major order and each element equal to one or two horizontal and vertical neighbors.at n=4A199146
• T(n,k)=Number of nXk 0..3 arrays with values 0..3 introduced in row major order and each element equal to one or two horizontal and vertical neighbors.at n=40A199149