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) |
|---|---|
| 1 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 4 |
| 6 | 6 |
| 7 | 8 |
| 8 | 9 |
| 9 | 10 |
| 10 | 13 |
| 11 | 21 |
| 12 | 41 |
| 13 | 74 |
| 14 | 131 |
| 15 | 213 |
| 16 | 347 |
| 17 | 519 |
| 18 | 971 |
| 19 | 2915 |
| 20 | 5732 |
| 21 | 7938 |
| 22 | 11913 |
| 23 | 19972 |
| 24 | 31783 |
| 25 | 40936 |
| 26 | 48361 |
| 27 | 87369 |
| 28 | 150765 |
| 29 | 294320 |
| 30 | 498635 |
| 31 | 547579 |
| 32 | 959518 |
| 33 | 1662638 |
| 34 | 2886810 |
| 35 | 4650033 |
| 36 | 6671264 |
| 37 | 10248826 |
| 38 | 17280370 |
| 39 | 33215677 |
| 40 | 50757703 |
| 41 | 140318553 |
| 42 | 229785674 |