T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the difference of the upper and lower median value of each 2X2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise.
A235784
T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the difference of the upper and lower median value of each 2X2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise.
Terms
- a(0) =81a(1) =537a(2) =537a(3) =3199a(4) =7331a(5) =3199a(6) =17837a(7) =86691a(8) =86369a(9) =17837a(10) =95679a(11) =922543a(12) =1998795a(13) =924323a(14) =95679a(15) =498597a(16) =9242949a(17) =40810011a(18) =41559689a(19) =9324103a(20) =498597a(21) =2546207a(22) =88065309a(23) =775083193a(24) =1647458581a(25) =807571787a(26) =89825051a(27) =2546207a(28) =12796069
External references
- oeis: A235784