Number of (n+2)X7 0..1 matrices with each 3X3 subblock having the same population.

A224648

Number of (n+2)X7 0..1 matrices with each 3X3 subblock having the same population.

Terms

    a(0) =22400a(1) =31232a(2) =44096a(3) =64256a(4) =115328a(5) =215744a(6) =430208a(7) =1012928a(8) =2472320a(9) =6281600a(10) =17169536a(11) =47643584a(12) =134253440a(13) =388421312a(14) =1130324096a(15) =3308544896a(16) =9779374208a(17) =28974513344a(18) =86050337408a(19) =256534766528a(20) =765559245440

External references