T(n,k)=Number of nXk 0..3 arrays with exactly floor(nXk/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..3 order.
A222666
T(n,k)=Number of nXk 0..3 arrays with exactly floor(nXk/2) elements unequal to at least one horizontal, vertical 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) =2a(8) =2a(9) =3a(10) =4a(11) =9a(12) =2a(13) =9a(14) =4a(15) =8a(16) =26a(17) =44a(18) =44a(19) =26a(20) =8a(21) =10a(22) =103a(23) =110a(24) =452a(25) =110a(26) =103a(27) =10a(28) =55a(29) =446
External references
- oeis: A222666