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 | 2 |
| 2 | 9 |
| 3 | 29 |
| 4 | 55 |
| 5 | 89 |
| 6 | 199 |
| 7 | 521 |
| 8 | 987 |
| 9 | 1597 |
| 10 | 3571 |
| 11 | 6765 |
| 12 | 10946 |
| 13 | 17711 |
| 14 | 28657 |
| 15 | 64079 |
| 16 | 121393 |
| 17 | 196418 |
| 18 | 317811 |
| 19 | 514229 |
| 20 | 1149851 |
| 21 | 2178309 |
| 22 | 3524578 |
| 23 | 5702887 |
| 24 | 9227465 |
| 25 | 14930352 |
| 26 | 24157817 |
| 27 | 39088169 |
| 28 | 63245986 |
| 29 | 102334155 |