Number of (n+1)X(4+1) 0..4 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 12.

A234110

Number of (n+1)X(4+1) 0..4 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 12.

Terms

    a(0) =2064a(1) =7742a(2) =31740a(3) =151304a(4) =738628a(5) =3840512a(6) =20547980a(7) =114726620a(8) =659505140a(9) =3907997608a(10) =23683903008a(11) =146366102920a(12) =917675482460

External references