Number of (n+2)X6 0..1 matrices with each 3X3 subblock having the same population.

A224647

Number of (n+2)X6 0..1 matrices with each 3X3 subblock having the same population.

Terms

    a(0) =8000a(1) =12320a(2) =19328a(3) =31616a(4) =64256a(5) =135872a(6) =303488a(7) =775232a(8) =2028416a(9) =5447168a(10) =15405440a(11) =43963712a(12) =126627200a(13) =371378240a(14) =1092921728a(15) =3227503616a(16) =9594041216a(17) =28558924352a(18) =85132055168a(19) =254413742912a(20) =760757553536

External references