T(n,k)=Number of (n+1)X(k+1) 0..6 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 18.

A233997

T(n,k)=Number of (n+1)X(k+1) 0..6 arrays with every 2X2 subblock having the sum of the absolute values of all six edge and diagonal differences equal to 18.

Terms

    a(0) =164a(1) =774a(2) =774a(3) =3496a(4) =3040a(5) =3496a(6) =17156a(7) =11622a(8) =11622a(9) =17156a(10) =81200a(11) =51026a(12) =38220a(13) =51026a(14) =81200a(15) =409848a(16) =218602a(17) =150572a(18) =150572a(19) =218602a(20) =409848a(21) =1995424a(22) =1058618a(23) =578992a(24) =560408a(25) =578992a(26) =1058618a(27) =1995424a(28) =10261264a(29) =4923910

External references