T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.
A238081
T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one.
Terms
- a(0) =256a(1) =1592a(2) =1592a(3) =9884a(4) =14456a(5) =9884a(6) =59772a(7) =132316a(8) =132316a(9) =59772a(10) =378708a(11) =1191324a(12) =1781008a(13) =1191324a(14) =378708a(15) =2285576a(16) =10449784a(17) =19616408a(18) =19616408a(19) =10449784a(20) =2285576a(21) =14349272a(22) =92535056a(23) =242829762a(24) =336372000a(25) =242829762a(26) =92535056
External references
- oeis: A238081