Number of nX4 integer arrays with each element equal to the number of horizontal and vertical neighbors differing from itself by exactly one.

A266077

Number of nX4 integer arrays with each element equal to the number of horizontal and vertical neighbors differing from itself by exactly one.

Terms

    a(0) =1a(1) =1a(2) =6a(3) =5a(4) =7a(5) =26a(6) =23a(7) =35a(8) =64a(9) =99a(10) =161a(11) =276a(12) =431a(13) =705a(14) =1164a(15) =1893a(16) =3099a(17) =5082a(18) =8299a(19) =13605a(20) =22310a(21) =36487a(22) =59747a(23) =97906a(24) =160357a(25) =262695a(26) =430344a(27) =704739a(28) =1154443a(29) =1891402

External references