T(n,k)=Number of (n+1)X(k+1) 0..3 arrays colored with the maximum plus the upper median plus the minimum minus the lower median of every 2X2 subblock.
A236142
T(n,k)=Number of (n+1)X(k+1) 0..3 arrays colored with the maximum plus the upper median plus the minimum minus the lower median of every 2X2 subblock.
Terms
- a(0) =256a(1) =2976a(2) =2976a(3) =34734a(4) =79260a(5) =34734a(6) =405132a(7) =2113860a(8) =2113860a(9) =405132a(10) =4726586a(11) =56388240a(12) =129107036a(13) =56388240a(14) =4726586a(15) =55128306a(16) =1503850638a(17) =7882228972a(18) =7882228972a(19) =1503850638a(20) =55128306a(21) =643062117a(22) =40110759152a(23) =481223530251
External references
- oeis: A236142