Number of (n+2) X (2+2) 0..3 arrays with no element unequal to a strict majority of its horizontal, vertical, diagonal and antidiagonal neighbors, with values 0..3 introduced in row major order.
A231435
Number of (n+2) X (2+2) 0..3 arrays with no element unequal to a strict majority of its horizontal, vertical, diagonal and antidiagonal neighbors, with values 0..3 introduced in row major order.
Terms
- a(0) =2a(1) =4a(2) =8a(3) =17a(4) =45a(5) =104a(6) =280a(7) =752a(8) =2076a(9) =5947a(10) =17063a(11) =50170a(12) =148048a(13) =440654a(14) =1318362a(15) =3954541a(16) =11900191a(17) =35855502a(18) =108184920a(19) =326687124a(20) =987055180a(21) =2983676881a(22) =9021446161a(23) =27283340688a(24) =82523932704a(25) =249635724500a(26) =755206783160
External references
- oeis: A231435