Number of n X 2 0..1 arrays with no 1 equal to more than two of its horizontal and vertical neighbors, with the exception of exactly one element.

A283197

Number of n X 2 0..1 arrays with no 1 equal to more than two of its horizontal and vertical neighbors, with the exception of exactly one element.

Terms

    a(0) =0a(1) =0a(2) =6a(3) =36a(4) =176a(5) =824a(6) =3668a(7) =15808a(8) =66640a(9) =276184a(10) =1129482a(11) =4570084a(12) =18329920a(13) =72981648a(14) =288779688a(15) =1136580576a(16) =4452663936a(17) =17372989712a(18) =67541322638a(19) =261743811012

External references