A185566 1/4 the number of nX8 0..3 arrays with no element equal both to the element above and to the element to its left.
16384, 683437500, 28355191537860, 1176277376648694960, 48796145962555619907720, 2024236566241727245692157080, 83972485690826213759616527499540, 3483475434832751291309593655505225600
Offset: 1
Keywords
Examples
Some solutions for 3X8 with a(1,1)=0 ..0..0..0..0..0..0..1..3....0..0..0..0..0..0..1..1....0..0..0..0..0..2..2..1 ..0..2..0..2..2..0..0..1....0..2..0..2..2..2..3..1....0..2..0..2..2..0..2..3 ..0..0..2..0..0..2..0..3....0..0..2..0..0..2..2..1....0..0..2..0..2..0..0..1
Links
- R. H. Hardin, Table of n, a(n) for n = 1..158
Comments