Number of nX2 0..1 arrays with no 1 equal to more than one of its horizontal and vertical neighbors.

A282990

Number of nX2 0..1 arrays with no 1 equal to more than one of its horizontal and vertical neighbors.

Terms

    a(0) =4a(1) =11a(2) =33a(3) =98a(4) =291a(5) =865a(6) =2570a(7) =7637a(8) =22693a(9) =67432a(10) =200373a(11) =595405a(12) =1769236a(13) =5257255a(14) =15621845a(15) =46420050a(16) =137936399a(17) =409875693a(18) =1217938738a(19) =3619084505a(20) =10754048825a(21) =31955475472a(22) =94955158681a(23) =282157659273a(24) =838426745764

External references