T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum minus the upper median of every 2X2 subblock equal.
A237898
T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum minus the upper median of every 2X2 subblock equal.
Terms
- a(0) =256a(1) =1848a(2) =1848a(3) =13600a(4) =32404a(5) =13600a(6) =103536a(7) =563534a(8) =563534a(9) =103536a(10) =789664a(11) =10390072a(12) =21793104a(13) =10390072a(14) =789664a(15) =6082368a(16) =192679586a(17) =925593210a(18) =925593210a(19) =192679586a(20) =6082368a(21) =46779520a(22) =3656111168a(23) =39591208852a(24) =96197188500
External references
- oeis: A237898