Number of nX4 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 0 and 1 1 1 vertically.

A207342

Number of nX4 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 0 and 1 1 1 vertically.

Terms

    a(0) =9a(1) =81a(2) =192a(3) =828a(4) =3130a(5) =11230a(6) =43260a(7) =163710a(8) =604340a(9) =2295512a(10) =8644786a(11) =32247604a(12) =121846736a(13) =458125776a(14) =1716149678a(15) =6468493030a(16) =24309087961a(17) =91233180855a(18) =343432736925

External references