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

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Text this: Colourings of Cyclotomic Integers with Class Number One