T(n,k)=Number of nXk 0..2 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 3 and at least one element with value (x(i,j)-1) mod 3, and upper left element zero.
A231037
T(n,k)=Number of nXk 0..2 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 3 and at least one element with value (x(i,j)-1) mod 3, and upper left element zero.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =0a(5) =0a(6) =0a(7) =0a(8) =2a(9) =0a(10) =0a(11) =4a(12) =10a(13) =0a(14) =0a(15) =0a(16) =0a(17) =72a(18) =32a(19) =2a(20) =0a(21) =0a(22) =32a(23) =736a(24) =1344a(25) =278a(26) =12a(27) =0a(28) =0a(29) =80
External references
- oeis: A231037