T(n,k)=Number of (n+1)X(k+1) 0..4 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 10 (10 maximizes T(1,1)), and no two adjacent values equal.

A233989

T(n,k)=Number of (n+1)X(k+1) 0..4 arrays with every 2X2 subblock having the sum of the squares of the edge differences equal to 10 (10 maximizes T(1,1)), and no two adjacent values equal.

Terms

    a(0) =56a(1) =236a(2) =236a(3) =976a(4) =1540a(5) =976a(6) =4064a(7) =9632a(8) =9632a(9) =4064a(10) =16880a(11) =62040a(12) =92320a(13) =62040a(14) =16880a(15) =70176a(16) =393396a(17) =914000a(18) =914000a(19) =393396a(20) =70176a(21) =291648a(22) =2520604a(23) =8950496a(24) =14319916a(25) =8950496a(26) =2520604a(27) =291648a(28) =1212224a(29) =16042420

External references