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 | 1 |
| 1 | 12 |
| 2 | 78 |
| 3 | 364 |
| 4 | 1365 |
| 5 | 4368 |
| 6 | 12376 |
| 7 | 31824 |
| 8 | 75582 |
| 9 | 167960 |
| 10 | 352716 |
| 11 | 705432 |
| 12 | 1352077 |
| 13 | 2496132 |
| 14 | 4457322 |
| 15 | 7725796 |
| 16 | 13036530 |
| 17 | 21469812 |
| 18 | 34584914 |
| 19 | 54595476 |
| 20 | 84596733 |
| 21 | 128856520 |
| 22 | 193184004 |
| 23 | 285392328 |
| 24 | 415873822 |
| 25 | 598309152 |
| 26 | 850534752 |
| 27 | 1195596128 |
| 28 | 1663018149 |