Number of n X 3 integer arrays with each element equal to the number of horizontal and vertical neighbors differing from itself by exactly one.

A266076

Number of n X 3 integer arrays with each element equal to the number of horizontal and vertical neighbors differing from itself by exactly one.

Terms

    a(0) =2a(1) =4a(2) =4a(3) =6a(4) =5a(5) =12a(6) =10a(7) =16a(8) =21a(9) =31a(10) =42a(11) =66a(12) =89a(13) =132a(14) =191a(15) =280a(16) =407a(17) =601a(18) =873a(19) =1281a(20) =1875a(21) =2748a(22) =4024a(23) =5902a(24) =8642a(25) =12667a(26) =18562a(27) =27204a(28) =39866a(29) =58431

External references