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.
Rotate and display numbered tile
Set the array elements whose value is 13 to 0
Generate pi using logarithm
02 - Vector Variables 3
Is my wife right?
So many choices
The Hitchhiker's Guide to MATLAB
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