How to Shorten This Logical Expression?

What is the best way to rewrite A in the shortest way?

B = 1:14;

A = B == 1 | B == 2 | B == 3 | B == 7 ;

Answer 1

[Azzi Abdelmalek]

A = ismember(B,[1 2 3 7])

Answer 2

[Image Analyst]

How about

A = B <= 3 | B == 7 ;