• Support PF! Buy your school textbooks, materials and every day products via PF Here!

Subscript addition

  • Thread starter Robb
  • Start date
207
6
Problem Statement
Let ##F_n be the n-th Fibonacci number, where F_0=0 and F_1=1. Prove that if n is a multiple of 4, the F_n is a multiple of 3.
Relevant Equations
##F_{4k+4}
Can somebody please explain below

##F_{4k+4} = F_{4k+3} + F_{4k+2}##

I thought it would be

##F_{4k+4} = F_{4k+3} +F_{4k+1}##

Thanks!
 
207
6
AHHHH! Gracias!
 

Want to reply to this thread?

"Subscript addition" You must log in or register to reply here.

Physics Forums Values

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving
Top