This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 4 |
| 3 | 6 |
| 4 | 10 |
| 5 | 18 |
| 6 | 29 |
| 7 | 47 |
| 8 | 78 |
| 9 | 126 |
| 10 | 204 |
| 11 | 332 |
| 12 | 537 |
| 13 | 869 |
| 14 | 1408 |
| 15 | 2278 |
| 16 | 3686 |
| 17 | 5966 |
| 18 | 9653 |
| 19 | 15619 |
| 20 | 25274 |
| 21 | 40894 |
| 22 | 66168 |
| 23 | 107064 |
| 24 | 173233 |
| 25 | 280297 |
| 26 | 453532 |
| 27 | 733830 |
| 28 | 1187362 |
| 29 | 1921194 |
| 30 | 3108557 |
| 31 | 5029751 |
| 32 | 8138310 |
| 33 | 13168062 |
| 34 | 21306372 |
| 35 | 34474436 |
| 36 | 55780809 |
| 37 | 90255245 |
| 38 | 146036056 |
| 39 | 236291302 |
| 40 | 382327358 |