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

A224658

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

Terms

    a(0) =19683a(1) =67797a(2) =67797a(3) =233523a(4) =171315a(5) =233523a(6) =804357a(7) =444933a(8) =444933a(9) =804357a(10) =3295269a(11) =1221507a(12) =886707a(13) =1221507a(14) =3295269a(15) =13499973a(16) =4334499a(17) =1937061a(18) =1937061a(19) =4334499a(20) =13499973a(21) =55306341a(22) =15889635a(23) =5858757a(24) =3374595a(25) =5858757a(26) =15889635

External references