Sum of neighbor maps: number of nX4 binary arrays indicating the locations of corresponding elements equal to the sum mod 4 of their horizontal and vertical neighbors in a random 0..3 nX4 array.
A220803
Sum of neighbor maps: number of nX4 binary arrays indicating the locations of corresponding elements equal to the sum mod 4 of their horizontal and vertical neighbors in a random 0..3 nX4 array.
Terms
- a(0) =16a(1) =256a(2) =4096a(3) =62648a(4) =1048576a(5) =16777216a(6) =268435456a(7) =4294967296a(8) =68700598768
External references
- oeis: A220803