發送短信 : A supercongruence motivated by the Legendre family of elliptic curves

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