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
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
Шаблон:Integers Шаблон:Num-stub
