Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 0 1 1 vertically.

A207362

Number of n X n 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 0 1 1 vertically.

Terms

    a(0) =2a(1) =16a(2) =90a(3) =784a(4) =5856a(5) =42849a(6) =353808a(7) =2792241a(8) =21195317a(9) =182223001a(10) =1372615690a(11) =11550015841a(12) =91115397450a(13) =745461286801

External references