Red, green, and blue tiles
March 10, 2006
Using a combination of grey square tiles and oblong tiles chosen from: red tiles (measuring two units), green tiles (measuring three units), and blue tiles (measuring four units), it is possible to tile a row measuring five units in length in exactly fifteen different ways.
How many ways can a row measuring fifty units in length be tiled?
NOTE: This is related to Problem 116.
Written by gamwe6 who lives and works in San Francisco building useful things. You should follow him on Twitter