Number of 4 X n 0..2 arrays with no element x(i,j) adjacent to value 2-x(i,j) horizontally, diagonally or antidiagonally.
A232923
Number of 4 X n 0..2 arrays with no element x(i,j) adjacent to value 2-x(i,j) horizontally, diagonally or antidiagonally.
Terms
- a(0) =81a(1) =162a(2) =1122a(3) =5808a(4) =33702a(5) =186720a(6) =1054446a(7) =5907444a(8) =33206862a(9) =186398988a(10) =1046931522a(11) =5878727460a(12) =33013750890a(13) =185390166264
External references
- oeis: A232923