# Arithmetic progression

## Description

An arithmetic progression (AP) or arithmetic sequence is a sequence of numbers such that the difference between the consecutive terms is constant and is calling common difference. The behavior of the arithmetic progression depends on the common difference . If the common difference is:

Positive, the members (terms) will grow towards positive infinity.

Negative, the members (terms) will grow towards negative infinity.

## Variables

a_{n} | Nth term of the sequence (dimensionless) |

a_{1} | First term (dimensionless) |

n | Number of terms (dimensionless) |

d | Common difference (dimensionless) |