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 | 1 |
| 2 | 2 |
| 3 | 7 |
| 4 | 14 |
| 5 | 61 |
| 6 | 98 |
| 7 | 417 |
| 8 | 950 |
| 9 | 2829 |
| 10 | 4456 |
| 11 | 24873 |
| 12 | 42980 |
| 13 | 306091 |
| 14 | 543462 |
| 15 | 595741 |
| 16 | 691290 |
| 17 | 2459767 |
| 18 | 4092108 |
| 19 | 37557035 |
| 20 | 193242042 |
| 21 | 360012409 |
| 22 | 516201296 |
| 23 | 4341338257 |
| 24 | 7943382348 |
| 25 | 27024448579 |
| 26 | 45075855410 |
| 27 | 102204647503 |
| 28 | 109956141102 |
| 29 | 346222803073 |
| 30 | 571398562364 |