Answered
I created a list of points, and then a list of segments connecting these points:
L_1=Sequence((cos(t), sin(t)), t, 0, n 2 π, 2π / m)
L_2=Sequence(Segment(L_1(k), L_1(k + n)), k, 1, n m)
Then I fill column A in the spreadsheet with L_2:
FillColumn(1,L_2)
But the entries in L_2 are now lines, not segments. I want segments, not lines. Is there a way to fix this? I'm putting the segments in the spreadsheet so that I can more easily change the colors of indivdual segments.
The same question 
fiillcolumn fills with "Resulting cells are free objects, i.e. independent of the list." so this does not work for you
type A1=1
A2=2
select A1, A2 then drag down the blue square
type
B1 = Element(L_2, A1) then select and drag down the cell like in attached
(select B16 and drag down the blue square)
better if you attach the file next time
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