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 | 0 |
| 2 | 7 |
| 3 | 9 |
| 4 | 16 |
| 5 | 399 |
| 6 | 657 |
| 7 | 1040 |
| 8 | 26391 |
| 9 | 43289 |
| 10 | 68640 |
| 11 | 1741343 |
| 12 | 2856481 |
| 13 | 4529184 |
| 14 | 114902311 |
| 15 | 188484393 |
| 16 | 298857520 |
| 17 | 7581811119 |
| 18 | 12437113521 |
| 19 | 19720067120 |
| 20 | 500284631607 |
| 21 | 820661007929 |
| 22 | 1301225572416 |
| 23 | 33011203874879 |
| 24 | 54151189409857 |