Question about numbers in arithmetic progression

From: R3769 (r3769_at_aol.com)
Date: 12/03/04


Date: 03 Dec 2004 00:10:59 GMT

Suppose x_1,..,x_n are in arithmetic progression and gcd(x_1,..,x_n)=1. What
is the minimum value of |a_1|+...+|a_n| where a_1*x_1+...+a_n*x_n=1?

Rich