Custom Fill Down

Hello. I am pretty much an amature when it comes to excel so any help would be great. I looked everywhere and can only find Macro solutions which I could not get to work, because I'm a dolt.

I need a list with 3 of the same numbers filled down. So starting at 8501 and ending at 9000.

So 8501, 8501, 8501, 8502, 8502, 8502.....9000, 9000, 9000. In one column.

Thanks so much, I appreciate it.

Try:

=8500+INT(MOD((ROW(A1)-1)/3,9000))+1 copied down

Try this:

E1: 8501
E2: 8501
E3: 8501

E4:=E3+(COUNTIF(E1:E3,E3)=3)

Copy that formula down as far as you need.
When done...
Copy the list...Paste.Special.Values

Is that something you can work with?