203 (two hundred [and] three) is the natural number following 202 and preceding 204.
203 is the seventh Bell number, giving the number of partitions of a set of size 6.
[1] 203 different triangles can be made from three rods with integer lengths of at most 12, and 203 integer squares (not necessarily of unit size) can be found in a staircase-shaped polyomino formed by stacks of unit squares of heights ranging from 1 to 12.
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