T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having the sum of the absolute values of the edge differences equal to 6 and no adjacent elements equal.

A233733

T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having the sum of the absolute values of the edge differences equal to 6 and no adjacent elements equal.

Terms

    a(0) =40a(1) =148a(2) =148a(3) =556a(4) =756a(5) =556a(6) =2104a(7) =3972a(8) =3972a(9) =2104a(10) =7976a(11) =21432a(12) =29816a(13) =21432a(14) =7976a(15) =30260a(16) =115972a(17) =233432a(18) =233432a(19) =115972a(20) =30260a(21) =114820a(22) =631628a(23) =1851404a(24) =2723072a(25) =1851404a(26) =631628a(27) =114820a(28) =435720a(29) =3435216

External references