I was just wondering how I managed to get all the way through primary school, secondary school, GSCE, A-level and two years of maths at uni without coming across "Magic Squares"
then I realised, it's because they are a curiosity, I had come across the most famous one (with numbers 1 - 9 making a symmetrical shape).
but I forgot about them as they appear to have no practical use what-so-ever.
that the two numbers above the number below make the sum of that number
that going down the triangle the outside is always 1's
the second row is always one higher that the one above it. (regular counting)
that the third row is triangular numbers.
that is was invented by a floppy haired French man?