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Some explanations about the search :
- An isolated lowercase letter is taken as a variable, and matches any positive integer. If in the numbers you are searching for there are several occurrences of the same integer, you can use the same variable many times (examples : "F(n)", "(2^n+1)/3" and "x^y+y^x")
- The ? operator matches with any (empty or not) string (examples : "?+1" and "?lucas?")
- The search is case sensitive
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Created by Henri Lifchitz
& Renaud Lifchitz : October, 26 2000,
last modification: October, 28 2025 15:30 (Time in France)