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Fibonacci Sequence Reference
Fibonacci sequence F0 through F30, with term indices and values useful for geocaching number-sequence puzzles.
| Index n | Fibonacci F(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 5 |
| 6 | 8 |
| 7 | 13 |
| 8 | 21 |
| 9 | 34 |
| 10 | 55 |
| 11 | 89 |
| 12 | 144 |
| 13 | 233 |
| 14 | 377 |
| 15 | 610 |
| 16 | 987 |
| 17 | 1597 |
| 18 | 2584 |
| 19 | 4181 |
| 20 | 6765 |
| 21 | 10946 |
| 22 | 17711 |
| 23 | 28657 |
| 24 | 46368 |
| 25 | 75025 |
| 26 | 121393 |
| 27 | 196418 |
| 28 | 317811 |
| 29 | 514229 |
| 30 | 832040 |
Start with F0=0, F1=1. Each later term is the sum of the previous two. Some puzzles index the sequence from 1 instead of 0, so always check the stated convention.
Geocaching tip: A number list such as 1, 1, 2, 3, 5, 8, 13 often indicates Fibonacci positions or offsets.