T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the lower median minus the upper median minus the minimum of every 2X2 subblock equal.

A237241

T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the lower median minus the upper median minus the minimum of every 2X2 subblock equal.

Terms

    a(0) =256a(1) =1280a(2) =1280a(3) =6976a(4) =10304a(5) =6976a(6) =40064a(7) =91744a(8) =91744a(9) =40064a(10) =234752a(11) =853152a(12) =1301304a(13) =853152a(14) =234752a(15) =1395200a(16) =8036672a(17) =19274172a(18) =19274172a(19) =8036672a(20) =1395200a(21) =8344576a(22) =76825568a(23) =289676104a(24) =459119016a(25) =289676104a(26) =76825568a(27) =8344576

External references