T(n,k)=Number of nXk 0..3 arrays x(i,j) with each element horizontally, vertically or antidiagonally next to at least one element with value (x(i,j)+1) mod 4, no adjacent elements equal, and upper left element zero.
A230910
T(n,k)=Number of nXk 0..3 arrays x(i,j) with each element horizontally, vertically or antidiagonally next to at least one element with value (x(i,j)+1) mod 4, no adjacent elements equal, and upper left element zero.
Terms
- a(0) =0a(1) =0a(2) =0a(3) =0a(4) =2a(5) =0a(6) =0a(7) =8a(8) =8a(9) =0a(10) =0a(11) =26a(12) =38a(13) =26a(14) =0a(15) =0a(16) =84a(17) =152a(18) =152a(19) =84a(20) =0a(21) =0a(22) =272a(23) =634a(24) =802a(25) =634a(26) =272a(27) =0a(28) =0a(29) =882
External references
- oeis: A230910