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 | 30104309 |
| 2 | 100129033 |
| 3 | 109845884 |
| 4 | 451564392 |
| 5 | 622423768 |
| 6 | 916946759 |
| 7 | 6799389524 |
| 8 | 9336252149 |
| 9 | 19587821624 |
| 10 | 98891779017 |
| 11 | 255373745624 |
| 12 | 1499291015624 |
| 13 | 1532242466549 |
| 14 | 2023768276633 |
| 15 | 2636118566533 |
| 16 | 2644378346249 |
| 17 | 4324878052633 |
| 18 | 5560581801133 |
| 19 | 22242792374999 |