T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with no 2X2 subblock having the minimum of its diagonal elements less than the absolute difference of its antidiagonal elements.
A251175
T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with no 2X2 subblock having the minimum of its diagonal elements less than the absolute difference of its antidiagonal elements.
Terms
- a(0) =136a(1) =1192a(2) =1192a(3) =10950a(4) =28598a(5) =10950a(6) =100462a(7) =710438a(8) =710438a(9) =100462a(10) =923568a(11) =17822017a(12) =49016166a(13) =17822017a(14) =923568a(15) =8489391a(16) =447045247a(17) =3387331664a(18) =3387331664a(19) =447045247a(20) =8489391a(21) =78041038a(22) =11217458242a(23) =234762060017
External references
- oeis: A251175