Created series1 function.
Created series1 function.

weidnem/IntroPython2016,UWPCE-PythonCert/IntroPython2016,weidnem/IntroPython2016,Baumelbi/IntroPython2016,UWPCE-PythonCert/IntroPython2016,Baumelbi/IntroPython2016,UWPCE-PythonCert/IntroPython2016,weidnem/IntroPython2016