Number of n X 2 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,3,1,1,1 for x=0,1,2,3,4.

A197617

Number of n X 2 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,3,1,1,1 for x=0,1,2,3,4.

Terms

    a(0) =0a(1) =0a(2) =8a(3) =0a(4) =8a(5) =32a(6) =16a(7) =64a(8) =152a(9) =160a(10) =424a(11) =832a(12) =1216a(13) =2688a(14) =4968a(15) =8384a(16) =16936a(17) =30944a(18) =55440a(19) =107072a(20) =196152a(21) =359776a(22) =679880a(23) =1251456a(24) =2315136a(25) =4330752a(26) =8000840a(27) =14842752a(28) =27638984a(29) =51176864

External references