So you are trying to extract the 1st, 7th, 13th... values from a list?
Assuming you start in row1 col D ( or column to your choice) and your data starts in A1
try=INDEX(A$1:A$13,6*ROW()-5)
Drag right for three columns, and down as far as needed
Adapt the range to your needs but keep the relative reference in mind

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