{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"The Ultimate Challenge: The 3x+1 Problem","author_name":"Jeffrey C. Lagarias","thumbnail_url":"https://www.ebooknetworking.net/books/082/184/big0821849409.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-0821849409.html\">The Ultimate Challenge: The 3x+1 Problem</a>","width":400,"height":300}