StevenXClontz’s avatarStevenXClontz’s Twitter Archive—№ 1,502

    1. Fred Ibonacci builds townhouses such that each adjancent townhouse may share a room with exactly one adjoining house. I wonder why...
  1. …in reply to @StevenXClontz
    Fred Ibonacci builds townhouses with adjacent house roofs sometimes joined. I count 8 ways to build row of 5, and 13 for 6. Why? #puzzle