OK, but you can you *derive* that formula?
Does “look up in OEIS” count as “derive”?
Tim: You, William, David, and others have figured me out. I suppose there are worse habits than repeatedly clicking the "Webcam" button on OEIS.
Factorize THIS, buddy
Right and wrong
(Linear) Recurrence Equations - Generalised Fibonacci-like sequences
Is it really a 5?
Compute the nth Pythagorean prime
Count numbers whose reciprocals' decimal expansions terminate
Identify Wagstaff primes
Convert a number from base 10 to factorial notation
Solve the Challenger puzzle
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