Sequences - Math is Fun
https://www.mathsisfun.com/algebra/sequences-series.html
WebExamples: {1, 2, 3, 4, ...} is a very simple sequence (and it is an infinite sequence) {20, 25, 30, 35, ...} is also an infinite sequence. {1, 3, 5, 7} is the sequence of the first 4 odd numbers (and is a finite sequence) {4, 3, 2, 1} is 4 to 1 backwards. {1, 2, 4, 8, 16, 32, ...} is an infinite sequence where every term doubles.
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