Number of n X n 0..3 arrays of the median of the corresponding element, the element to the east and the element to the south in a larger (n+1)X(n+1) 0..3 array without adjacent equal elements in the latter.

A229313

Number of n X n 0..3 arrays of the median of the corresponding element, the element to the east and the element to the south in a larger (n+1)X(n+1) 0..3 array without adjacent equal elements in the latter.