Number of 7Xn 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 1 1 1 vertically.

A207687

Number of 7Xn 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 1 1 1 vertically.

Terms

    a(0) =25a(1) =625a(2) =1292a(3) =4174a(4) =9450a(5) =25076a(6) =65564a(7) =171382a(8) =433468a(9) =1150747a(10) =2968284a(11) =7722348a(12) =19756486a(13) =52194634a(14) =134386810a(15) =348854340a(16) =903166514a(17) =2358439491a(18) =6101183894a(19) =15824652924a(20) =41067569740a(21) =106834907856a(22) =276798237718a(23) =718012247867

External references