fire9

Published at 631 × 253 in Forest fires

The centred square numbers can be built from a central dot and four copies of a triangle number.

Calum is a lecturer in physics at Edge Hill University where he studies topological solitons and enjoys talking about maths and physics to anyone who will listen. He can often be found on the side of a mountain or out on a bike, talking to himself about solitons.
cdross1.github.io    All articles by Calum

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