Hello, Bernhard!

In a recent post to MHF I tried to form the sum with subscripts greater than 2.

However Latex always returned an error.

Can anyone please help?

Using [tex], it will not support any expression longer than

We can produce the terms separately: .[tex]c_5[/tex] .

. . but this is very inefficient.

I recommend using [tex] tags.

[tex]c_1,c_2,c_3,c_4,\hdots[/tex] .