T(n,k)=Number of (n+2)X(k+2) 0..3 matrices with each 3X3 subblock having the same population.

A224806

T(n,k)=Number of (n+2)X(k+2) 0..3 matrices with each 3X3 subblock having the same population.

Terms

    a(0) =262144a(1) =1048576a(2) =1048576a(3) =4194304a(4) =2867200a(5) =4194304a(6) =16777216a(7) =8151040a(8) =8151040a(9) =16777216a(10) =78118912a(11) =25056256a(12) =16844800a(13) =25056256a(14) =78118912a(15) =363741184a(16) =100235776a(17) =39510016a(18) =39510016a(19) =100235776a(20) =363741184a(21) =1693669888a(22) =417335296

External references