238 (number)
238 (number)
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238 (number)

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238 (number)

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

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

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

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