A triangle of numbers where each number equals the two numbers directly above it added together (except for the edges, which are all "1").

Here we have highlighted that 1+3 = 4

It has many interesting and useful number patterns within it.

A triangle of numbers where each number equals the two numbers directly above it added together (except for the edges, which are all "1").

Here we have highlighted that 1+3 = 4

It has many interesting and useful number patterns within it.

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