Number of (n+1)X(n+1) 0..3 arrays with rows and columns in nondecreasing order and with no 2X2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one.

A184086

Number of (n+1)X(n+1) 0..3 arrays with rows and columns in nondecreasing order and with no 2X2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one.

Terms

    a(0) =86a(1) =260a(2) =9483a(3) =368326a(4) =91203410a(5) =55632308352

External references