Number of 5Xn 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 0 and 1 0 1 vertically.

A207469

Number of 5Xn 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 0 and 1 0 1 vertically.

Terms

    a(0) =16a(1) =256a(2) =1152a(3) =5369a(4) =21517a(5) =71928a(6) =247631a(7) =778010a(8) =2406006a(9) =7360306a(10) =21881127a(11) =65146723a(12) =191700402a(13) =561478139a(14) =1642808262a(15) =4784514520a(16) =13933101566a(17) =40513685939a(18) =117692339295a(19) =341873087318a(20) =992380089279

External references