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I need the reference count of each sequence. I have tried to calculate this myself, but get a slightly different number. Can this be included in the data export?
![image](https://github.com/oeis/oeis…
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### 页面英文名
derangement
### 我希望能添加的内容是
相关内容目前分散在“排列组合”和“容斥原理”两个页面,并且不全面。
而“全错位排列数” $D_n$,是一种组合数,拥有生成函数,拥有递推,拥有很好的渐进关系(可以用 $e$ 来估计)。
因此思考把它独立出来,不再出现在“排列组合”和“容斥原理”中,而是作为“错位排列”页面出现,可以位于“卡特兰数…
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The MiniZinc Handbook index doesn't mention lazy evaluation, although Section 4.1.7.3 "If-then-else expressions" says:
> If the if expression is par bool then evaluation of if-then-else expressions…
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Introducing a class to represent association schemes.
We represent a scheme with:
* the points of the scheme
* the relations as a matrix
We compute the intersection numbers and the relations lazily…
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### Current Behavior
`simple_cycles` appears to enter an infinite loop. My graph has under 4000 nodes and edges. If I subtract a handful of them (less than 100), it runs successfully in just about a …
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Let G be a group. A G-cycle index is a map from G to the ring of cycle index series. These objects are useful for enumerating G-species (species equipped with an equivariant G-action), where they se…
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对于`uint64`范围 $0\ to\ 2^{64}-1, \text{inclusive}$ 的输入:
```php
rtrim(base64_encode(rtrim(pack('P', $i), "\x00")), '=')
```
对于`int64`范围中负数部分 $-2^{63}\ to \ -1, \text{inclusive}$ 的输入:
```php
rtrim(b…
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Greetings to all teammates.
**Do you want to have an extra-challenging task each month?
Or, do you accept coding extra lines in order to solve an interesting task once a month?**
Do you know an…
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There's an important bug that I'm having to handle in enhancing turtle, but should properly be fixed in ui2, not in turtle. Here's the situation:
Suppose that inside `checkParameters()` a paramete…
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Migrated from [rt.perl.org#126812](https://rt-archive.perl.org/perl5/Ticket/Display.html?id=126812) (status was 'open')
Searchable as RT126812$
p5pRT updated
3 years ago