Sigma Notation Help: Writing 5, 10, 17, 26

[123mathguy]

Homework Statement

i need help writing in sigma notaion
the numbers are 5,10,17,26

 

[HallsofIvy]

Okay, the numbers are 5, 10, 17, and 27! What do you want to do with them? Since you mentions "sigma notation" I might guess adding but what exactly is your question?

 

[matadorqk]

Okay, the numbers are 5, 10, 17, and 27! What do you want to do with them? Since you mentions "sigma notation" I might guess adding but what exactly is your question?

Yeah little mistype there, the last number is 26 :P.

Anyways, here's an advice, find the difference between the numbers, any relation?