# Sequence.Sq class

Namespace: [Grasshopper2.Expressions](https://developer.rhino3d.com/api/gh2/namespace/grasshopper2.expressions.md) · Assembly: [Grasshopper2](https://developer.rhino3d.com/api/gh2/assembly/grasshopper2.md)

```cs
public sealed class Sequence.Sq
```

Sequence tracker class to be used during sequence construction. This class has an indexer allowing the retrieval of older values from the sequence. This class *MUST* be public otherwise the dynamic compiler can't resolve the indexers.

## Properties

- [CurrentN](https://developer.rhino3d.com/api/gh2/type/grasshopper2.expressions.sequence.sq/currentn.md)

## Indexers

- [this[]](https://developer.rhino3d.com/api/gh2/type/grasshopper2.expressions.sequence.sq/item.md): (2 overloads)