Number of 2Xn integer arrays with each element equal to the number of horizontal, diagonal and antidiagonal neighbors less than itself.

A265982

Number of 2Xn integer arrays with each element equal to the number of horizontal, diagonal and antidiagonal neighbors less than itself.

Terms

    a(0) =1a(1) =23a(2) =117a(3) =583a(4) =5554a(5) =52555a(6) =405165a(7) =3187023a(8) =27556293a(9) =236031924a(10) =1954705747a(11) =16303686375a(12) =137792545601

External references