T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock having the sum of the absolute values of the edge differences equal to 4.

A233949

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock having the sum of the absolute values of the edge differences equal to 4.

Terms

    a(0) =44a(1) =226a(2) =226a(3) =1150a(4) =2108a(5) =1150a(6) =5874a(7) =19484a(8) =19484a(9) =5874a(10) =29970a(11) =180972a(12) =328508a(13) =180972a(14) =29970a(15) =152974a(16) =1679760a(17) =5601514a(18) =5601514a(19) =1679760a(20) =152974a(21) =780718a(22) =15596008a(23) =95457842a(24) =176523392a(25) =95457842a(26) =15596008a(27) =780718a(28) =3984650a(29) =144797048

External references