Number of 6Xn 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 1 0 and 1 1 1 vertically.

A209227

Number of 6Xn 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 1 0 and 1 1 1 vertically.

Terms

    a(0) =19a(1) =361a(2) =456a(3) =576a(4) =1776a(5) =5476a(6) =15984a(7) =46656a(8) =143856a(9) =443556a(10) =1312020a(11) =3880900a(12) =11871220a(13) =36312676a(14) =108154648a(15) =322130704a(16) =980104384a(17) =2982033664a(18) =8920216800a(19) =26683222500a(20) =80907908400a(21) =245326052416a(22) =735864237328

External references