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

A266034

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

Terms

    a(0) =1a(1) =11a(2) =50a(3) =315a(4) =2142a(5) =13796a(6) =89487a(7) =578659a(8) =3745788a(9) =24284259a(10) =157359111a(11) =1019384424a(12) =6604244679a(13) =42788807569a(14) =277226538674

External references