Sn = 1/34 + 1/35 + .... + 1/66 =
810596235079202952514867757 / 1182266884102822267511361600
There is no easy formula for this.
Former Senior Instructor, Manhattan GMAT and VeritasPrep
Vice President, Midtown NYC Investment Bank, Structured Finance IT
MFE, Haas School of Business, UC Berkeley, Class of 2005
MBA, Anderson School of Management, UCLA, Class of 1993