Number of length n+2 0..1 arrays with the sum of medians of adjacent triples multiplied by some arrangement of +-1 equal to zero.

A253122

Number of length n+2 0..1 arrays with the sum of medians of adjacent triples multiplied by some arrangement of +-1 equal to zero.

Terms

    a(0) =4a(1) =12a(2) =16a(3) =40a(4) =64a(5) =144a(6) =256a(7) =544a(8) =1024a(9) =2112a(10) =4096a(11) =8320a(12) =16384a(13) =33024a(14) =65536a(15) =131584a(16) =262144a(17) =525312a(18) =1048576a(19) =2099200a(20) =4194304a(21) =8392704a(22) =16777216a(23) =33562624a(24) =67108864a(25) =134234112a(26) =268435456a(27) =536903680a(28) =1073741824a(29) =2147549184

External references