Number of (n+1)X4 0..2 arrays with every 2 X 2 subblock having the same number of clockwise edge increases as its horizontal neighbors and no 2 X 2 subblock having the same number of counterclockwise edge increases as its vertical neighbors.
A205731
Number of (n+1)X4 0..2 arrays with every 2 X 2 subblock having the same number of clockwise edge increases as its horizontal neighbors and no 2 X 2 subblock having the same number of counterclockwise edge increases as its vertical neighbors.
Terms
- a(0) =1764a(1) =3888a(2) =14715a(3) =39450a(4) =191766a(5) =526680a(6) =2500875a(7) =6985128a(8) =33846264a(9) =94355988a(10) =454693140a(11) =1269412704a(12) =6131489892a(13) =17111113680a(14) =82584274404a(15) =230506000944
External references
- oeis: A205731