New posts in Pattern Recognition

If a prime number is reversed, and then appended to itself, why is the result always a composite number?

Are Mersenne prime exponents always odd?

Pattern to last three digits of power of $3$?

How is this a number sequence $58, 26, 16, 14, 10$

Formula to this pattern? $1$, $11$, $21$, $1211$, $111221$, $\ldots$

Predict next number from a series

Getting the sequence $\{1, 0, -1, 0, 1, 0, -1, 0, \ldots\}$ without trig?

How to OCR engraved text?

Pattern recognition in time series

Finding the longest repeated substring