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 | 1 |
| 3 | 1 |
| 4 | 3 |
| 5 | 5 |
| 6 | 7 |
| 7 | 9 |
| 8 | 17 |
| 9 | 31 |
| 10 | 51 |
| 11 | 77 |
| 12 | 129 |
| 13 | 227 |
| 14 | 391 |
| 15 | 641 |
| 16 | 1067 |
| 17 | 1829 |
| 18 | 3157 |
| 19 | 5351 |
| 20 | 9033 |
| 21 | 15399 |
| 22 | 26471 |
| 23 | 45349 |
| 24 | 77387 |
| 25 | 132293 |
| 26 | 227153 |
| 27 | 390379 |
| 28 | 670013 |
| 29 | 1149819 |
| 30 | 1976595 |
| 31 | 3402137 |
| 32 | 5856157 |
| 33 | 10079327 |
| 34 | 17358491 |
| 35 | 29918957 |
| 36 | 51590271 |
| 37 | 88971985 |
| 38 | 153484661 |
| 39 | 264898703 |
| 40 | 457374335 |