Fibonacci numbers start at 1 and 1, and each proceeding element is the sum of the two preceding elements. Ex: 1,1,2,3,5,8,13,21,...
Leonardo numbers are named after Leonardo Fibonacci, the same as above, and they also start at 1 and 1, but each proceeding term is the sum of the two preceding terms AND 1. Ex: 1,1,3,5,9,15,25,...
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Leonardo Fibonacci discovered the number sequence which is named after him.
Fibonacci is famous for his contributions to number theory.
The 365th Fibonacci number is 8531073606282249384383143963212896619394786170594625964346924608389878465365.
The 100th Fibonacci number is 354,224,848,179,261,915,075.
Answer 144 which is F(12) Reason 55 and 89 are the 10th and 11th Fibonacci numbers, If we add these we have 144 which is the 12 Fibonacci number and is a perfect square. I am using F(0) as the 0 Fibonacci number and F(1) as the first.