Text this: An efficiently generated family of binary de Bruijn sequences

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