Number of (n+2)X4 0..3 matrices with each 3X3 subblock having the same population.

A224804

Number of (n+2)X4 0..3 matrices with each 3X3 subblock having the same population.

Terms

    a(0) =1048576a(1) =2867200a(2) =8151040a(3) =25056256a(4) =100235776a(5) =417335296a(6) =1816453120a(7) =9114142720a(8) =46167923200a(9) =236010496000

External references