Fibonacci sequence

noun2

1. •
   The sequence of integers, each of which is the sum of the preceding two, the first and second numbers both being 1.

   • If the Fibonacci sequence is chosen for the quasiperiodic direction of a 1D QC,^([quasicrystal]) it may simply be called a Fibonacci phase. — 1999
2. •
   Any sequence of numbers such that each is the sum of the preceding two.

   • Indeed, these pairs belong to a Fibonacci sequence of what are called Lucas numbers that begins 2, 1, 3, 4, 7, 11,... — 1977