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

A236875

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

Terms

    a(0) =81a(1) =287a(2) =287a(3) =1069a(4) =1503a(5) =1069a(6) =4131a(7) =8117a(8) =8117a(9) =4131a(10) =16153a(11) =46023a(12) =61750a(13) =46023a(14) =16153a(15) =63867a(16) =260957a(17) =499947a(18) =499947a(19) =260957a(20) =63867a(21) =253269a(22) =1502355a(23) =4012441a(24) =5913287a(25) =4012441a(26) =1502355a(27) =253269a(28) =1008347a(29) =8629071

External references