T(n,k)=Number of nXk 0..2 arrays x(i,j) with each element horizontally, vertically, diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero.
A230526
T(n,k)=Number of nXk 0..2 arrays x(i,j) with each element horizontally, vertically, diagonally or antidiagonally next to 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) =12a(5) =0a(6) =0a(7) =78a(8) =78a(9) =0a(10) =0a(11) =576a(12) =1408a(13) =576a(14) =0a(15) =0a(16) =4374a(17) =29618a(18) =29618a(19) =4374a(20) =0a(21) =0a(22) =32832a(23) =627350a(24) =1787448a(25) =627350a(26) =32832a(27) =0a(28) =0a(29) =246726
External references
- oeis: A230526