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 | 18 |
| 2 | 324 |
| 3 | 660 |
| 4 | 1992 |
| 5 | 5334 |
| 6 | 10340 |
| 7 | 22960 |
| 8 | 46826 |
| 9 | 94601 |
| 10 | 192192 |
| 11 | 375592 |
| 12 | 746568 |
| 13 | 1463672 |
| 14 | 2848131 |
| 15 | 5567402 |
| 16 | 10787309 |
| 17 | 20928995 |
| 18 | 40520266 |
| 19 | 78275905 |
| 20 | 151304457 |
| 21 | 291889743 |
| 22 | 563242937 |
| 23 | 1086277275 |
| 24 | 2094265839 |
| 25 | 4038763494 |
| 26 | 7785977121 |