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The Encyclopaedia of Sequences has more than 3000 entries
Fact of the week
8 January 2024
The Encyclopaedia of Sequences has more than 3000 entries
To mathematicians, the word sequence means something very specific: a series of numbers in a particular order, that follow a rule that describes how to get from one number to the next. Every time someone finds a new sequence, it is submitted to an online encyclopaedia, checked, and registered.

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100 Things to Know About Numbers, Computers & Coding

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