Hello, Rifat. I guess, based on the Test Suite, that you are allowing _all_ integers, which is not what might be expected given that Fermat's Last Theorem traditionally involves natural numbers only (1, 2, 3, 4, ...). https://www.britannica.com/science/Fermats-last-theorem It might be worth mentioning in the Problem Statement. —DIV
Word Counting and Indexing
Back to basics 4 - Search Path
Create the following sequence : 0 1 1 4 9 25 64 169 ...
Concatenate two strings
BLOCK x3 (Version 2)
longest common semi-substring
Integer Sequence - II : New Fibonacci
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