| 词条 | 203 (number) |
| 释义 |
| number = 203 | divisor = 1, 7, 29, 203 }} 203 (two hundred [and] three) is the natural number following 202 and preceding 204. In mathematics203 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.[2] In other fields
See also
References1. ^{{Cite OEIS|A000110|name=Bell or exponential numbers: number of ways to partition a set of n labeled elements}} {{Integers|2}}{{DEFAULTSORT:203 (Number)}}2. ^{{Cite OEIS|A002623|name=G.f.: 1/((1-x)^4*(1+x))}} 3. ^Hypertext Transfer Protocol (HTTP/1.1): Semantics and Content, 203 Non-Authoritative Information, ietf.org, retrieved 2014-07-26. 1 : Integers |
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