T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with no 2X2 subblock having its maximum diagonal element less than the absolute difference of its antidiagonal elements.
A251359
T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with no 2X2 subblock having its maximum diagonal element less than the absolute difference of its antidiagonal elements.
Terms
- a(0) =216a(1) =2920a(2) =2920a(3) =39594a(4) =137642a(5) =39594a(6) =536886a(7) =6505867a(8) =6505867a(9) =536886a(10) =7279536a(11) =307396791a(12) =1069722970a(13) =307396791a(14) =7279536a(15) =98701641a(16) =14522811996a(17) =175856353691a(18) =175856353691a(19) =14522811996a(20) =98701641a(21) =1338276196a(22) =686136478104
External references
- oeis: A251359