T(n,k)=Number of 2nX2k 0..4 arrays with values 0..4 introduced in row major order and each element unequal to exactly two horizontal and vertical neighbors.
A198511
T(n,k)=Number of 2nX2k 0..4 arrays with values 0..4 introduced in row major order and each element unequal to exactly two horizontal and vertical neighbors.
Terms
- a(0) =4a(1) =59a(2) =59a(3) =1626a(4) =4666a(5) =1626a(6) =52065a(7) =308854a(8) =308854a(9) =52065a(10) =1720080a(11) =23016128a(12) =59007820a(13) =23016128a(14) =1720080a(15) =57202471a(16) =1768050096a(17) =13127875861a(18) =13127875861a(19) =1768050096a(20) =57202471a(21) =1905005414a(22) =137433138206
External references
- oeis: A198511