T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with no element equal to a strict majority of its horizontal and vertical neighbors, with upper left element zero.

A231144

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with no element equal to a strict majority of its horizontal and vertical neighbors, with upper left element zero.

Terms

    a(0) =18a(1) =100a(2) =100a(3) =570a(4) =1470a(5) =570a(6) =3234a(7) =22870a(8) =22870a(9) =3234a(10) =18376a(11) =352444a(12) =966000a(13) =352444a(14) =18376a(15) =104386a(16) =5441634a(17) =40511376a(18) =40511376a(19) =5441634a(20) =104386a(21) =593022a(22) =83985430a(23) =1701515682a(24) =4626094668a(25) =1701515682a(26) =83985430a(27) =593022a(28) =3368932

External references