3,1-4,8:0,4

It looks like you’re using a decimal comma, so this is the range 3.1 to 4.8 with step 0.4 (i.e., 3.1-4.8:0.4).

Sequence:

• 3.1
• 3.5
• 3.9
• 4.3
• 4.7

Number of terms: 5

Notes:

• The end 4.8 isn’t reached exactly with step 0.4 from 3.1, so the last term is 4.7.
• If you want the end to be inclusive, you’d need a different step or a different ending value.

If you’d like, I can generate the terms for a different start, end, or step, or show the general method.