T(n,k)=Number of nXk 0..3 arrays with no more than floor(nXk/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..3 order.

A222378

T(n,k)=Number of nXk 0..3 arrays with no more than floor(nXk/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..3 order.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =4a(7) =5a(8) =5a(9) =4a(10) =5a(11) =18a(12) =9a(13) =18a(14) =5a(15) =14a(16) =63a(17) =118a(18) =118a(19) =63a(20) =14a(21) =17a(22) =234a(23) =498a(24) =1391a(25) =498a(26) =234a(27) =17a(28) =75a(29) =1163

External references