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 | -5 |
| 1 | 16 |
| 2 | 10159 |
| 3 | 143824 |
| 4 | 867211 |
| 5 | 3415120 |
| 6 | 10373071 |
| 7 | 26425744 |
| 8 | 59271739 |
| 9 | 120704656 |
| 10 | 227860495 |
| 11 | 404631376 |
| 12 | 683245579 |
| 13 | 1106013904 |
| 14 | 1727242351 |
| 15 | 2615311120 |
| 16 | 3854919931 |
| 17 | 5549499664 |
| 18 | 7823790319 |
| 19 | 10826585296 |
| 20 | 14733641995 |
| 21 | 19750758736 |
| 22 | 26117017999 |