short stories - Science fiction story that ends with "Let there be light"

Very many years ago (I think around the late 1950s) I read a very short story (about 4 pages) about computers at a time when they were in their infancy. The story started in the past but then went forward explaining how computers would become more and more centralized. Firstly in towns/cities, then counties, then countries, then continents, then one large computer for the world. When this became too small a larger one was created on the moon and later a bigger one in space which everyone could access. Subsequently the sun cooled, life on earth died and the computer gravitated to the nearest shining sun. When this sun cooled it made its way to the next sun, etc., etc. Finally the computer ended up at the last shining star in the universe which was also dying. But there were other similar computers orbiting the sun. As this died the computers did the only thing left. Together they "said" "let there be light" and there was light. So, who wrote it? (It was not The Last Question by Asimov) Was it called Let There Be Light? How can I get a copy?