T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the upper median unequal to the lower median in every 2X2 subblock.
A235849
T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the upper median unequal to the lower median in every 2X2 subblock.
Terms
- a(0) =156a(1) =1584a(2) =1584a(3) =16228a(4) =42080a(5) =16228a(6) =166816a(7) =1133608a(8) =1133608a(9) =166816a(10) =1716484a(11) =30740652a(12) =80556656a(13) =30740652a(14) =1716484a(15) =17668128a(16) =835207356a(17) =5778908484a(18) =5778908484a(19) =835207356a(20) =17668128a(21) =181881988a(22) =22709045764a(23) =415698469568
External references
- oeis: A235849