Natural number/Catalogs/Special properties

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  • Fibonacci number [r]: Element of the sequence in which the first number is 0, the second number is 1, and each subsequent number is equal to the sum of the previous two numbers. [e]
    • Lucas number [r]: Terms of the Fibonacci sequence whose first two terms are 2 and 1. [e] Lucas sequence [r]: A particular generalisation of sequences like the Fibonacci numbers, Lucas numbers, Pell numbers or Jacobsthal numbers. [e]