T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with the difference of the upper and lower median value of each 2X2 subblock in lexicographically nondecreasing order columnwise and nonincreasing rowwise.
A235962
T(n,k)=Number of (n+1)X(k+1) 0..1 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) =16a(1) =50a(2) =50a(3) =144a(4) =228a(5) =144a(6) =398a(7) =928a(8) =928a(9) =398a(10) =1076a(11) =3574a(12) =5196a(13) =3574a(14) =1076a(15) =2866a(16) =13346a(17) =27296a(18) =27296a(19) =13346a(20) =2866a(21) =7560a(22) =48848a(23) =137988a(24) =195428a(25) =137988a(26) =48848a(27) =7560a(28) =19798a(29) =176420
External references
- oeis: A235962