T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum plus the upper median plus the minimum minus the lower median of every 2X2 subblock equal.

A237067

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum plus the upper median plus the minimum minus the lower median of every 2X2 subblock equal.

Terms

    a(0) =81a(1) =255a(2) =255a(3) =826a(4) =1101a(5) =826a(6) =2823a(7) =5034a(8) =5034a(9) =2823a(10) =9815a(11) =25451a(12) =32336a(13) =25451a(14) =9815a(15) =34996a(16) =132095a(17) =243256a(18) =243256a(19) =132095a(20) =34996a(21) =125469a(22) =723774a(23) =1812742a(24) =2913981a(25) =1812742a(26) =723774a(27) =125469a(28) =457125a(29) =3983941

External references