Here is a list of all the Sequence Number formulas you can use. Refer to this article for more help on how to insert the formula into a field.

**Simple Sequence Number**

`SequenceNo`

Output: 1

**Sequence Number not starting at 1**

`SequenceNo+65`

Output: 66

**Sequence Number with a Prefix**

`CONCATENATE("PR",SequenceNo)`

Output: PR1

**Prefixed Sequence Number with Padded Zeros**

`CONCATENATE("PR",TEXT(SequenceNo,"00000"))`

Output: PR00001

**Sequence Number with Year**

`CONCATENATE(YEAR(CreatedAt),"-",SequenceNo)`

Output: 2017-1

**Sequence Number with 2 Digit Year**

`CONCATENATE(TEXT(CreatedAt,"yy"),"-",SequenceNo)`

Output: 17-1

**Sequence Number with Month as an Abbreviation**

`CONCATENATE(TEXT(CreatedAt,"mmm"),"-",SequenceNo)`

Output: Mar-1

**Sequence Number with Month as a Single Digit**

`CONCATENATE(MONTH(CreatedAt),"-",SequenceNo)`

Output: 3-1