A proper straight pool rack with the 1 and 5 balls as the two corner balls and all other balls placed randomly.
Straight pool, also called 14.1 continuous or simply 14.1, is a pocket billiards (pool) game. It was the common sport of championship competition until faster-playing games like nine-ball and to a lesser extent eight-ball became more popular. This is the Classic game from the history of pool. The game was especially popular in the United States, and was the subject of the classic 1961 film The Hustler.