definition: \(a_n = a_1 + f \times (n-1)\)
example: 1, 3, 5, 7, 9, 11, 13, ...
definition: \(a_n = a_1 \times r^{(n-1)}\)
example: 1, 2, 4, 8, 16, 32, 64, 128, ...
definition: \(a_0 = 0; a_1 = 1; a_n = a_{n-1} + a_{n-2}\)
example: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, ...