ROME, Nov 24 - The OECD's Economic Outlook to be published on Wednesday will forecast U.S. economic growth of 4.2 percent in 2004, La Repubblica newspaper reported on Sunday, quoting from the semi-annual document. La Repubblica said the report saw Japan's economy growing 1.8 percent next year, Germany's 1.5 percent, France's 1.7 percent, Britain's 2.7 percent, Canada's 2.8 percent and Italy's 1.6 percent. Overall growth among members of the Organisation for Economic Co-operation and Development will come in at three percent, according to the report.//