We will use F_{2} to mean the Fibonacci number in the table next to the 2 in the first column,

so F_{5} refers to the Fibonacci number next to the 5 in the first column,

as you can see F_{4}=3 and F_{7}=13.

so F

as you can see F

n | F_{n} |
---|---|

0 | 0 |

1 | 1 |

2 | |

3 | |

4 | |

5 | |

6 | |

7 | |

8 | |

9 | |

10 | |

11 | |

12 | |

13 | |

14 | |

15 | |

16 | |

17 | |

18 | |

19 |