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 | 1 |
| 2 | 4 |
| 3 | 11 |
| 4 | 33 |
| 5 | 86 |
| 6 | 266 |
| 7 | 742 |
| 8 | 2244 |
| 9 | 6613 |
| 10 | 19834 |
| 11 | 59138 |
| 12 | 177639 |
| 13 | 531674 |
| 14 | 1595468 |
| 15 | 4783786 |
| 16 | 14352225 |
| 17 | 43048318 |
| 18 | 129149968 |
| 19 | 387424670 |
| 20 | 1162288458 |
| 21 | 3486796922 |
| 22 | 10460430230 |
| 23 | 31381088266 |
| 24 | 94143408282 |
| 25 | 282429611911 |
| 26 | 847289262976 |