The first test case is wrong 0 and 21 are triangular numbers too (https://oeis.org/A000217), therefore:
[ 0, 6;
PS: And 0 does not make a pair with every number in this case.
What's wrong with the case x=20 in test suite? Why is y_correct=[ 10 10] ? I cannot pass it.
I don't know why your cheat isn't working, but look closely at what numbers your "for n=1:N" loop generates for that case.
Remove the polynomials that have positive real elements of their roots.
Test if a Number is a Palindrome without using any String Operations
Return the Fibonacci Sequence
Unique values without using UNIQUE function
Is this a valid Tic Tac Toe State?
I'm going to enjoy watching you calculate, Mr Anderson
Some Assembly Required
It's Happy! It's Fun! It's Happy Fun Hyperball!
"Find out the best cricket"
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