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 | 3 |
| 3 | 3 |
| 4 | 9 |
| 5 | 14 |
| 6 | 38 |
| 7 | 74 |
| 8 | 185 |
| 9 | 414 |
| 10 | 1026 |
| 11 | 2440 |
| 12 | 6077 |
| 13 | 14926 |
| 14 | 37454 |
| 15 | 93749 |
| 16 | 237035 |
| 17 | 599815 |
| 18 | 1526020 |
| 19 | 3889117 |
| 20 | 9944523 |
| 21 | 25475398 |
| 22 | 65416733 |
| 23 | 168277945 |
| 24 | 433705325 |
| 25 | 1119610147 |
| 26 | 2894928713 |