3X3 square grid graph coloring a rectangular array: number of nX1 0..8 arrays where 0..8 label nodes of the square grid graph and every array movement to a horizontal or vertical neighbor moves along an edge of this graph.
A223372
3X3 square grid graph coloring a rectangular array: number of nX1 0..8 arrays where 0..8 label nodes of the square grid graph and every array movement to a horizontal or vertical neighbor moves along an edge of this graph.
Terms
- a(0) =9a(1) =24a(2) =68a(3) =192a(4) =544a(5) =1536a(6) =4352a(7) =12288a(8) =34816a(9) =98304a(10) =278528a(11) =786432a(12) =2228224a(13) =6291456a(14) =17825792a(15) =50331648a(16) =142606336a(17) =402653184a(18) =1140850688a(19) =3221225472a(20) =9126805504a(21) =25769803776a(22) =73014444032a(23) =206158430208a(24) =584115552256
External references
- oeis: A223372