Number of (n+1) X (1+1) 0..2 arrays with every element both >= and <= some horizontal or antidiagonal neighbor.

A232250

Number of (n+1) X (1+1) 0..2 arrays with every element both >= and <= some horizontal or antidiagonal neighbor.

Terms

    a(0) =9a(1) =37a(2) =163a(3) =723a(4) =3209a(5) =14245a(6) =63235a(7) =280707a(8) =1246089a(9) =5531525a(10) =24555043a(11) =109002515a(12) =483874057a(13) =2147969733a(14) =9535072003a(15) =42327224963a(16) =187895169801a(17) =834087159397

External references