Number of (2+1)X(n+1) 0..3 arrays with the difference of the upper and lower median value of each 2X2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise.
A235819
Number of (2+1)X(n+1) 0..3 arrays with the difference of the upper and lower median value of each 2X2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise.
Terms
- a(0) =2894a(1) =87888a(2) =2287822a(3) =52447112a(4) =1113883030a(5) =22196597522a(6) =422920594570
External references
- oeis: A235819