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

A236728

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

Terms

    a(0) =81a(1) =211a(2) =211a(3) =550a(4) =639a(5) =550a(6) =1517a(7) =1956a(8) =1956a(9) =1517a(10) =4227a(11) =6469a(12) =6879a(13) =6469a(14) =4227a(15) =12072a(16) =21829a(17) =26724a(18) =26724a(19) =21829a(20) =12072a(21) =34817a(22) =76632a(23) =105206a(24) =127113a(25) =105206a(26) =76632a(27) =34817a(28) =101881a(29) =274715

External references