Number of (n+2)X(4+2) 0..2 arrays with no element unequal to a strict majority of its horizontal, vertical, diagonal and antidiagonal neighbors, with values 0..2 introduced in row major order.

A231223

Number of (n+2)X(4+2) 0..2 arrays with no element unequal to a strict majority of its horizontal, vertical, diagonal and antidiagonal neighbors, with values 0..2 introduced in row major order.

Terms

    a(0) =6a(1) =17a(2) =54a(3) =182a(4) =812a(5) =2962a(6) =12179a(7) =50196a(8) =205057a(9) =864270a(10) =3593492a(11) =15094003a(12) =63545858a(13) =267204717a(14) =1127304903a(15) =4753575829a(16) =20059305680a(17) =84691952803a(18) =357558971694

External references