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 | 15 |
| 2 | 16 |
| 3 | 31 |
| 4 | 47 |
| 5 | 78 |
| 6 | 125 |
| 7 | 203 |
| 8 | 328 |
| 9 | 531 |
| 10 | 859 |
| 11 | 1390 |
| 12 | 2249 |
| 13 | 3639 |
| 14 | 5888 |
| 15 | 9527 |
| 16 | 15415 |
| 17 | 24942 |
| 18 | 40357 |
| 19 | 65299 |
| 20 | 105656 |
| 21 | 170955 |
| 22 | 276611 |
| 23 | 447566 |
| 24 | 724177 |
| 25 | 1171743 |
| 26 | 1895920 |
| 27 | 3067663 |
| 28 | 4963583 |
| 29 | 8031246 |
| 30 | 12994829 |