What can be the formula for the sum of ranges for different sheets?

Question

Google Sheets

We need a formula that would calculate the sum of a fixed range (let's say A2:A) in different sheets. Moreover, so that the formula takes the names of these sheets from the range (let's say B2:B16) in the "List" sheet. In other words, so that the formula calculates the sum in different sheets, and takes the names of these sheets from the "List" sheet.
If it were simple, it should be something like =sum('('Список'!B2:B16)'!A2:A), but it doesn't work that way.

Answer 1

=arrayformula({
B2&"!A2:A";
B3&"!A2:A";
B4&"!A2:A"
})

etc.