T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the upper median of every 2X2 subblock equal.
A237142
T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the upper median of every 2X2 subblock equal.
Terms
- a(0) =256a(1) =1500a(2) =1500a(3) =8414a(4) =22960a(5) =8414a(6) =52484a(7) =333446a(8) =333446a(9) =52484a(10) =328768a(11) =5961802a(12) =9999802a(13) =5961802a(14) =328768a(15) =2145192a(16) =107652788a(17) =436271890a(18) =436271890a(19) =107652788a(20) =2145192a(21) =14152560a(22) =2051159992a(23) =17759803582a(24) =50384979024a(25) =17759803582
External references
- oeis: A237142