Number of (n+1) X (1+1) 0..3 arrays with every 2 X 2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 9.

A234133

Number of (n+1) X (1+1) 0..3 arrays with every 2 X 2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 9.

Terms

    a(0) =32a(1) =80a(2) =192a(3) =512a(4) =1280a(5) =3584a(6) =9216a(7) =26624a(8) =69632a(9) =204800a(10) =540672a(11) =1605632a(12) =4259840a(13) =12713984a(14) =33816576a(15) =101187584a(16) =269484032a(17) =807403520a(18) =2151677952a(19) =6450839552a(20) =17196646400a(21) =51573161984a(22) =137506062336a(23) =412451078144

External references