Contribute cover: Large & Small numbers & Sequences

  _____    _    _    _    _    __   __  
 / ____|| | || | || | || | ||  \ \\/ // 
/ //---`' | || | || | || | ||   \ ` //  
\ \\___   | \\_/ || | \\_/ ||    | ||   
 \_____||  \____//   \____//     |_||   
  `----`    `---`     `---`      `-`'