Number of 4Xn 0..3 arrays with no more than floor(4Xn/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order.
A222682
Number of 4Xn 0..3 arrays with no more than floor(4Xn/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..3 order.
Terms
- a(0) =15a(1) =18a(2) =130a(3) =527a(4) =5374a(5) =58167a(6) =687222a(7) =11377192a(8) =157746714a(9) =2877417604a(10) =41716355254a(11) =762816679067
External references
- oeis: A222682