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) |
|---|---|
| 4 | 2 |
| 5 | 8 |
| 6 | 15 |
| 7 | 26 |
| 8 | 45 |
| 9 | 75 |
| 10 | 121 |
| 11 | 199 |
| 12 | 322 |
| 13 | 542 |
| 14 | 877 |
| 15 | 1427 |
| 16 | 2309 |
| 17 | 3739 |
| 18 | 6050 |
| 19 | 9790 |
| 20 | 15841 |
| 21 | 25632 |
| 22 | 41473 |
| 23 | 67105 |
| 24 | 108578 |
| 25 | 175683 |
| 26 | 284261 |
| 27 | 459944 |
| 28 | 744205 |
| 29 | 1204149 |
| 30 | 1948354 |
| 31 | 3152503 |
| 32 | 5100857 |
| 33 | 8253360 |