Number of nX2 binary arrays without the pattern 1 1 0 diagonally, vertically or horizontally.

A188516

Number of nX2 binary arrays without the pattern 1 1 0 diagonally, vertically or horizontally.

Terms

    a(0) =4a(1) =16a(2) =49a(3) =144a(4) =400a(5) =1089a(6) =2916a(7) =7744a(8) =20449a(9) =53824a(10) =141376a(11) =370881a(12) =972196a(13) =2547216a(14) =6671889a(15) =17472400a(16) =45751696a(17) =119793025a(18) =313644100a(19) =821166336a(20) =2149898689a(21) =5628600576a(22) =14736017664a(23) =38579637889a(24) =101003196100a(25) =264430435984

External references