Английская Википедия:238 (number)

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238 (two hundred [and] thirty-eight) is the natural number following 237 and preceding 239.

In mathematics

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238 is an untouchable number.[1] There are 238 2-vertex-connected graphs on five labeled vertices,[2] and 238 order-5 polydiamonds (polyiamonds that can partitioned into 5 diamonds).[3] Out of the 720 permutations of six elements, exactly 238 of them have a unique longest increasing subsequence.[4]

There are 238 compact and paracompact hyperbolic groups of ranks 3 through 10.[5]

References

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Шаблон:Integers Шаблон:Num-stub