T(n,k)=Number of nXk 0..2 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..2 order.

A222587

T(n,k)=Number of nXk 0..2 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..2 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) =59a(17) =112a(18) =112a(19) =59a(20) =14a(21) =17a(22) =200a(23) =426a(24) =1087a(25) =426a(26) =200a(27) =17a(28) =70a(29) =820

External references