T(n,k) = Half the number of (n+1) X (k+1) 0..2 arrays with every 2 X 2 subblock diagonal sum differing from its antidiagonal sum by more than 2.

A179618

T(n,k) = Half the number of (n+1) X (k+1) 0..2 arrays with every 2 X 2 subblock diagonal sum differing from its antidiagonal sum by more than 2.

Terms

    a(0) =5a(1) =11a(2) =11a(3) =21a(4) =35a(5) =21a(6) =43a(7) =93a(8) =93a(9) =43a(10) =85a(11) =269a(12) =314a(13) =269a(14) =85a(15) =171a(16) =747a(17) =1213a(18) =1213a(19) =747a(20) =171a(21) =341a(22) =2115a(23) =4375a(24) =6427a(25) =4375a(26) =2115a(27) =341a(28) =683a(29) =5933

External references