Number of nX4 0..1 arrays avoiding the patterns 0 1 0 or 1 0 1 in any row, column, diagonal or antidiagonal.

A206983

Number of nX4 0..1 arrays avoiding the patterns 0 1 0 or 1 0 1 in any row, column, diagonal or antidiagonal.

Terms

    a(0) =10a(1) =100a(2) =158a(3) =556a(4) =1866a(5) =5804a(6) =18528a(7) =59888a(8) =191484a(9) =612874a(10) =1966402a(11) =6301118a(12) =20187672a(13) =64705162a(14) =207369486a(15) =664535672a(16) =2129687696a(17) =6825166670a(18) =21872797724a(19) =70096742330a(20) =224642588748a(21) =719921959060

External references