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

A207273

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

Terms

    a(0) =21a(1) =441a(2) =1087a(3) =5132a(4) =18055a(5) =45520a(6) =140295a(7) =349415a(8) =877101a(9) =2164569a(10) =5025447a(11) =11757247a(12) =26570861a(13) =59370361a(14) =131185317a(15) =285043185a(16) =615447774a(17) =1313196034a(18) =2780365566a(19) =5844983027a(20) =12192162619a(21) =25292923072a(22) =52147005064a(23) =106956186914

External references