Sequences are lists of numbers, oftentimes adhering to a pattern or rule. Wolfram|Alpha has faculties for working with and learning about commonly occurring sequences like the Fibonacci sequence, the Lucas sequence, arithmetic sequences and geometric sequences, in addition to others.
Investigate the properties of sequences, perform convergence tests or evaluate their limits.
Find formulas for incompletely specified sequences. Sum or multiply incompletely specified infinite sequences or series.
Work with sequences of integers. Look up sequences by name or OEIS identification number.