Number of (n+1) X (6+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.

A234138

Number of (n+1) X (6+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) =3584a(1) =4040a(2) =4808a(3) =6440a(4) =9512a(5) =16424a(6) =30632a(7) =65192a(8) =141224a(9) =342440a(10) =807848a(11) =2131880a(12) =5299112a(13) =14779304a(14) =37923752a(15) =109378472a(16) =285821864a(17) =840035240a(18) =2216856488a(19) =6581111720a(20) =17457023912a(21) =52093750184a(22) =138546908072a(23) =414532438952

External references