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  2. Fibonacci sequence - Wikipedia

    en.wikipedia.org/wiki/Fibonacci_sequence

    The Fibonacci sequence first appears in the book Liber Abaci (The Book of Calculation, ... [79] the flowering of artichoke, the arrangement of a pine cone, ...

  3. Wikipedia:Reference desk/Archives/Mathematics/2024 April 23

    en.wikipedia.org/wiki/Wikipedia:Reference_desk/...

    Schimper appears to have been the first (in 1830) to describe an observed phyllotactic pattern in term of the Fibonacci sequence (to wit, for the rotational angle between leaves in a stem) and his friend Braun described the next year a Fibonacci pattern in pine cones. I found no evidence these gentlemen or any other 19th-century scientists ever ...

  4. Generalizations of Fibonacci numbers - Wikipedia

    en.wikipedia.org/wiki/Generalizations_of...

    A Fibonacci sequence of order n is an integer sequence in which each sequence element is the sum of the previous elements (with the exception of the first elements in the sequence). The usual Fibonacci numbers are a Fibonacci sequence of order 2.

  5. Wall–Sun–Sun prime - Wikipedia

    en.wikipedia.org/wiki/Wall–Sun–Sun_prime

    The k-Wall–Sun–Sun primes can be explicitly defined as primes p such that p 2 divides the k-Fibonacci number (()), where F k (n) = U n (k, −1) is a Lucas sequence of the first kind with discriminant D = k 2 + 4 and () is the Pisano period of k-Fibonacci numbers modulo p. [15]

  6. Fibonacci - Wikipedia

    en.wikipedia.org/wiki/Fibonacci

    In the Fibonacci sequence, each number is the sum of the previous two numbers. Fibonacci omitted the "0" and first "1" included today and began the sequence with 1, 2, 3, ... . He carried the calculation up to the thirteenth place, the value 233, though another manuscript carries it to the next place, the value 377.

  7. Patterns in nature - Wikipedia

    en.wikipedia.org/wiki/Patterns_in_nature

    In 1202, Leonardo Fibonacci introduced the Fibonacci sequence to the western world with his book Liber Abaci. [5] Fibonacci presented a thought experiment on the growth of an idealized rabbit population. [6] Johannes Kepler (1571–1630) pointed out the presence of the Fibonacci sequence in nature, using it to explain the pentagonal form of ...

  8. Lucas number - Wikipedia

    en.wikipedia.org/wiki/Lucas_number

    The Lucas sequence has the same recursive relationship as the Fibonacci sequence, where each term is the sum of the two previous terms, but with different starting values. [1] This produces a sequence where the ratios of successive terms approach the golden ratio , and in fact the terms themselves are roundings of integer powers of the golden ...

  9. Constant-recursive sequence - Wikipedia

    en.wikipedia.org/wiki/Constant-recursive_sequence

    The Fibonacci sequence is constant-recursive: each element of the sequence is the sum of the previous two. Hasse diagram of some subclasses of constant-recursive sequences, ordered by inclusion In mathematics , an infinite sequence of numbers s 0 , s 1 , s 2 , s 3 , … {\displaystyle s_{0},s_{1},s_{2},s_{3},\ldots } is called constant ...