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 and Forth Rows
Connect Four Win Checker
Given two strings, find the maximum overlap
Create a random logical vector of N elements of which M are true.
Cull vector elements that contain a specified digit
Are you in or are you out?
Tune your guitar
Sum my indices
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