123rd Day of Year: 03.05.19



  1. H. White, Bordered Magic Squares, http://budshaw.ca/BorderedMagicSquares.html.
  2. I.J. TANEJA, Running Expressions: Increasing and Decreasing Orders –  https://inderjtaneja.com/2017/05/24/running-expressions-increasing-and-decreasing-orders/
  3. I.J. TANEJA, Triangular Numbers and Running Expressions with Equalities – https://inderjtaneja.com/2019/01/18/triangular-numbers-and-running-expressions-with-equalities/

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