Number of nX6 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 0 1 1 vertically.

A207121

Number of nX6 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 0 1 1 vertically.

Terms

    a(0) =21a(1) =441a(2) =2499a(3) =14161a(4) =49861a(5) =175561a(6) =475984a(7) =1290496a(8) =2958144a(9) =6780816a(10) =13816824a(11) =28153636a(12) =52561236a(13) =98128836a(14) =171205398a(15) =298702089a(16) =493723461a(17) =816073489a(18) =1290571359a(19) =2040961329a(20) =3110933397a(21) =4741837321a(22) =7005780418a(23) =10350620644

External references