T(n,k)=Number of nXk 0..2 arrays x(i,j) with each element horizontally or vertically next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero.
A230275
T(n,k)=Number of nXk 0..2 arrays x(i,j) with each element horizontally or vertically 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) =0a(5) =0a(6) =0a(7) =2a(8) =2a(9) =0a(10) =0a(11) =8a(12) =28a(13) =8a(14) =0a(15) =0a(16) =30a(17) =258a(18) =258a(19) =30a(20) =0a(21) =0a(22) =108a(23) =2318a(24) =5734a(25) =2318a(26) =108a(27) =0a(28) =0a(29) =386
External references
- oeis: A230275