T(n,k)=Number of nXk 0..3 arrays with exactly floor(nXk/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order.

A222500

T(n,k)=Number of nXk 0..3 arrays with exactly floor(nXk/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order.

Terms

    a(0) =1a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =3a(7) =4a(8) =4a(9) =0a(10) =4a(11) =5a(12) =6a(13) =13a(14) =0a(15) =8a(16) =14a(17) =35a(18) =95a(19) =40a(20) =0a(21) =10a(22) =122a(23) =81a(24) =346a(25) =525a(26) =162a(27) =0a(28) =55a(29) =196

External references