formula to have a sequence of numbers

[Millsy123]

So what I am trying achieve is a list of numbers starting from 001/20, 002/20 and so on
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[footoo]

Format as : 000"/20"

Enter 1 in first cell and fill down in normal ways or with formula =A1+1

 

[Rick Rothstein]

Or alternately (if you want the "/20" to physically be in the cell...

=TEXT(ROWS($1:1),"000\/2\0")

 

[Millsy123]

Format as : 000"/20"

Enter 1 in first cell and fill down in normal ways or with formula =A1+1

Awesome, thanks buddy