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) |
|---|---|
| 5 | 6 |
| 6 | 54 |
| 7 | 297 |
| 8 | 1341 |
| 9 | 5468 |
| 10 | 20519 |
| 11 | 72168 |
| 12 | 242886 |
| 13 | 791780 |
| 14 | 2514453 |
| 15 | 7814225 |
| 16 | 23863941 |
| 17 | 71835845 |
| 18 | 213601046 |
| 19 | 628450974 |
| 20 | 1832227629 |
| 21 | 5299559865 |
| 22 | 15221688836 |
| 23 | 43450246045 |
| 24 | 123345029035 |
| 25 | 348417524877 |
| 26 | 979803281560 |