How to make chart include only values from every 5th column?

How to make chart include only values from every 5th column till the end?
Manually in "values" field it looks like:

=(dati!$D$3;dati!$I$3;dati!$N$3;dati!$S$3;dati!$X$3;dati!$AC$3;dati!$AH$3;dati!$AM$3;dati!$AR$3;dati!$AW$3;dati!$BB$3;dati!$BG$3;dati!$BL$3;dati!$BQ$3;dati!$BV$3;dati!$CA$3;dati!$CF$3;dati!$CK$3)

But it takes a lot of time to put manually every 5th cell in "values" field.

I have chart with 2 Y axes, 1st presents column chart, 2nd - line chart.

Is there any other solution?

Thx in advance.