Check whether the input matrix is a figurate number triangle: http://mathworld.wolfram.com/FigurateNumberTriangle.html
you should probably add a test case where the correct answer is false.
I added a few more tests as suggested.
Back to basics 3 - Temp Directory
Choose the best fitting dominoes
Stuff the Board
Whether the input is vector?
Generate pi using logarithm
Tune your guitar
Maintain shape of logical-index mask
The Hitchhiker's Guide to MATLAB
Cull vector elements that contain a specified digit
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